RF32 | PSUN60 Bioactive Natriuretic Peptides Measured By Mass Spectrometry and Associations With BMI, Race, and Metabolic Markers

Background

Natriuretic peptide (NP) hormones, atrial NP (ANP) and B-type NP (BNP), exert cardiovascular and metabolically protective effects. When measured by conventional immunoassay methods, NP levels are lower in obese, black, and insulin-resistant individuals, suggesting these groups may experience a relative NP deficiency. However, immunoassay measurements are likely poor determinants of physiologically relevant NPs as the immunoassay inadvertently captures predominantly inactive truncated peptides due to poor specificity and rapid degradation of the bioactive form. We have developed and validated a novel ultra performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) assay1 that specifically measures bioactive BNP (BNPMS) and ANP (ANPMS). Relationships between bioactive NPs measured by mass spectrometry (MS) with BMI, race, and glucose metabolism are not well-understood.

Methods

We measured bioactive BNP and ANP using a novel UPLC-MS/MS assay in 26 veterans without heart failure, diabetes, or significant cardiac/pulmonary/renal/hepatic disease. We also determined BNP using conventional immunoassay (BNPia), age, sex, race, BMI, fasting glucose, and HbA1c. We assessed relationships of NPs with continuous variables using Spearman's correlation and multivariable linear regression, and with categorical variables using Wilcoxon rank-sum.

Results

Among 26 veterans (aged 25-55, 69% male), 8 were lean (BMI 23.1 +/- 1.4 kg/m2) and 18 were obese (BMI 34 +/- 2.9 kg/m2). ANPMS was negatively associated with BMI (rs=-0.59, p=0.0015). Moreover, when analyzed by BMI category, ANPMS was lower in obese compared with lean individuals (mean 113.9 +/- 74.9 vs. mean 220 +/- 173.7 pg/mL, respectively, p=0.020). BNPMS was lower in blacks; all 5 black individuals had undetectably low BNPMS (<5 pg/mL), whereas whites had a higher mean BNPMS (19.3 pg/mL, p=0.011). BNPMS was negatively associated with fasting glucose (p=0.03) in multivariable regression models adjusted for age, sex, race, and BMI. BNPMS was not significantly associated with BNPia, possibly partially due to the large percentage whose BNPMS and/or BNPia was undetectably low (44% and 56%, respectively) in this non-heart failure cohort.

Discussion

Using a novel UPLC-MS/MS technique, we found that ANPMS is lower in obesity, and BNPMS is lower in black individuals and in those with higher fasting glucose. Our results are consistent with relationships of NPs assessed by traditional immunoassay methods from large epidemiologic studies. Our findings are particularly striking as our sample size was relatively small compared with epidemiologic studies. Our analyses of bioactive NP levels by this specific methodology support the emerging hypothesis that obese and black individuals experience a relative NP deficiency. Future large-scale studies quantifying bioactive NPs by MS are warranted to refine the phenotyping of individuals with relative NP deficiency and determine whether relative NP deficiency contributes to greater cardiometabolic risk.

1Reference: Dillon EM et al. Active BNP Measured by Mass Spectrometry and Response to Sacubitril/Valsartan. Journal of Cardiac Failure. 2021 Nov.

Presentation: Sunday, June 12, 2022 12:30 p.m. - 2:30 p.m., Monday, June 13, 2022 1:12 p.m. - 1:17 p.m.

Secondary haemophagocytic lymphohistiocytosis in COVID-19: correlation of the autopsy findings of bone marrow haemophagocytosis with HScore

BACKGROUND

Secondary haemophagocytic lymphohistiocytosis (sHLH) is characterised by a hyper activation of immune system that leads to multiorgan failure. It is suggested that excessive immune response in patients with COVID-19 could mimic this syndrome. Some COVID-19 autopsy studies have revealed the presence of haemophagocytosis images in bone marrow, raising the possibility, along with HScore parameters, of sHLH.

AIM

Our objective is to ascertain the existence of sHLH in some patients with severe COVID-19.

METHODS

We report the autopsy histological findings of 16 patients with COVID-19, focusing on the presence of haemophagocytosis in bone marrow, obtained from rib squeeze and integrating these findings with HScore parameters. CD68 immunohistochemical stains were used to highlight histiocytes and haemophagocytic cells. Clinical evolution and laboratory parameters of patients were collected from electronic clinical records.

RESULTS

Eleven patients (68.7%) displayed moderate histiocytic hyperplasia with haemophagocytosis (HHH) in bone marrow, three patients (18.7%) displayed severe HHH and the remainder were mild. All HScore parameters were collected in 10 patients (62.5%). Among the patients in which all parameters were evaluable, eight patients (80%) had an HScore >169. sHLH was not clinically suspected in any case.

CONCLUSIONS

Our results support the recommendation of some authors to use the HScore in patients with severe COVID-19 in order to identify those who could benefit from immunosuppressive therapies. The presence of haemophagocytosis in bone marrow tissue, despite not being a specific finding, has proved to be a very useful tool in our study to identify these patients.

Time-dependent cognitive and somatic symptoms of depression as predictors of new cardiac-related events in at-risk patients: the UPBEAT-UK cohort

BACKGROUND

Evidence suggests that somatic rather than cognitive depressive symptoms are risk factors for recurrent cardiac events in at-risk patients. However, this has never been explored using a time-dependent approach in a narrow time-frame, allowing a cardiac event-free time-window.

METHODS

The analysis was performed on 595 participants [70.6% male, median age 72 (27-98)] drawn from the UPBEAT-UK heart disease patient cohort with 6-monthly follow-ups over 3 years. Depressive symptomatology was measured using the Patient Health Questionnaire-9 (PHQ-9) (four somatic, five cognitive items). New cardiac events (NCEs) including cardiac-related mortality were identified by expert examination of patient records. Analyses were performed using Cox proportional hazard models with delayed entry, with time-dependent depressive dimensions and covariates measured 12-18 months (median: 14.1, IQR: 3.5) prior to the event, with a 12-month cardiac event-free gap.

RESULTS

There were 95 NCEs during the follow-up [median time-to-event from baseline: 22.3 months (IQR: 13.4)]. Both the somatic (HR 1.12, 95% CI 1.05-1.20, p = 0.001) and cognitive dimensions (HR 1.11, 95% CI 1.03-1.18, p = 0.004) were time-dependent risk factors for an NCE in the multi-adjusted models. Specific symptoms (poor appetite/overeating for the somatic dimension, hopelessness and feeling like a failure for the cognitive dimension) were also significantly associated.

CONCLUSION

This is the first study of the association between depressive symptom dimensions and NCEs in at-risk patients using a time-to-event standardised approach. Both dimensions considered apart were independent predictors of an NCE, along with specific items, suggesting regular assessments and tailored interventions targeting specific depressive symptoms may help to prevent NCEs in at-risk populations.

High-throughput SARS-CoV-2 and host genome sequencing from single nasopharyngeal swabs

During COVID19 and other viral pandemics, rapid generation of host and pathogen genomic data is critical to tracking infection and informing therapies. There is an urgent need for efficient approaches to this data generation at scale. We have developed a scalable, high throughput approach to generate high fidelity low pass whole genome and HLA sequencing, viral genomes, and representation of human transcriptome from single nasopharyngeal swabs of COVID19 patients.

Mutational Screening of BRCA1/2 Genes as a Predictive Factor for Therapeutic Response in Epithelial Ovarian Cancer: A Consensus Guide from the Spanish Society of Pathology (SEAP-IAP) and the Spanish Society of Human Genetics (AEGH)

Germline/somatic BRCA-mutated ovarian carcinomas (OC) are associated to have better response with platinum-based chemotherapy and long-term prognosis than non-BRCA-associated OCs. In addition, these mutations are predictive factors to response to Poly(ADP-ribose) polymerase (PARP) inhibitors. Different positioning papers have addressed the clinical recommendations for BRCA testing in OC. This consensus guide represents a collection of technical recommendations to address the detection of BRCA1/2 mutations in the molecular diagnostic testing strategy for OC. Under the coordination of Spanish Society of Pathology (SEAP-IAP) and the Spanish Society of Human Genetics (AEGH), these recommendations have been developed by pathologists and geneticists taking into account previously published recommendations and their experience in the molecular characterization of these genes. Since the implementation of BRCA testing as a predictive factor can initiate the workflow by testing germline mutations in the blood or by testing both germline and somatic mutations in tumor tissue, distinctive features of both strategies are discussed. Additionally, the recommendations included in this paper provide some references, quality parameters, and genomic tools aimed to standardize and facilitate the clinical genomic diagnosis of OC.

Recurrence quantification analysis with wavelet denoising and the characterization of magnetic flux emergence regions in solar photosphere

Solar systems complexity, multiscale, and nonlinearity are governed by numerous and continuous changes where the sun magnetic fields can successfully represent many of these phenomena. Thus, nonlinear tools to study these challenging systems are required. The dynamic system recurrence approach has been successfully used to deal with this kind challenge in many scientific areas, objectively improving the recognition of state changes, randomness, and degrees of complexity that are not easily identified by traditional techniques. In this work we introduce the use of these techniques in photospheric magnetogram series. We employ a combination of recurrence quantification analysis with a preprocessing denoising wavelet analysis to characterize the complexity of the magnetic flux emergence in the solar photosphere. In particular, with the developed approach, we identify regions of evolving magnetic flux and where they present a large degree of complexity, i.e., where predictability is low, intermittence is high, and low organization is present.

Modified SureSelectQXT Target Enrichment Protocol for Illumina Multiplexed Sequencing of FFPE Samples

Background

Personalised medicine is nowadays a major objective in oncology. Molecular characterization of tumours through NGS offers the possibility to find possible therapeutic targets in a time- and cost-effective way. However, the low quality and complexity of FFPE DNA samples bring a series of disadvantages for massive parallel sequencing techniques compared to high-quality DNA samples (from blood cells, cell cultures, etc.).

Results

We performed several experiments to understand the behaviour of FFPE DNA samples during the construction of SureSelect^QXT libraries. First, we designed a quality checkpoint for FFPE DNA samples based on the quantification of their amplification capability (qcPCR). We observed that FFPE DNA samples can be classified according to DIN value and qcPCR concentration into unusable, or low-quality (LQ) and good-quality (GQ) DNA. For GQ samples, we increased the amount of input DNA to 150 ng and the digestion time to 30 min, whereas for LQ samples, we used 50 ng of DNA as input but we decreased the digestion time to 1 min. In all cases, we increased the cycles of the pre-hyb PCR to 10 but decreased the cycles of the post-hyb PCR to 8. In addition, we confirmed that using half of the volume of reagents can be beneficial. Finally, in order to obtain better results, we designed a decision flow-chart to achieve a seeding concentration of 12–14 pM for MiSeq Reagent Kit v2.

Conclusions

Our experiments allowed us to unveil the behaviour of low-quality FFPE DNA samples during the construction of SureSelect^QXT libraries. Sequencing results showed that, using our modified SureSelect^QXT protocol, the final percentage of usable reads for low-quality samples was increased more than three times allowing to reach median depth/million reads values of 76.35. This value is equivalent to ~ 0.9 and ~ 0.7 of the values obtained for good-quality FFPE and high-quality DNA respectively.

Electronic supplementary material

The online version of this article (10.1186/s12575-018-0084-7) contains supplementary material, which is available to authorized users.

Trajectories of depression and anxiety symptoms in coronary heart disease strongly predict health care costs

Introduction

There is little information describing the trajectories of depression and anxiety symptomatology in the context of coronary heart disease (CHD), and their comparison according to sociodemographic and disability measures, cardiac risk factors, and health care costs.

Methods

Using a primary care cohort of 803 patients with a diagnosis of CHD, a latent class growth curve model was developed to study the distinct trajectories of depression and anxiety symptoms (using the hospital anxiety and depression scale) over a 3-year period comprised of 7 distinct follow-up points. Multinomial regression analysis was then conducted to study the association between latent classes, baseline risk factors, and total health care costs across time.

Results

The 5-class model yielded the best combination of statistical best-fit analysis and clinical correlation. These classes were as follows: “stable asymptomatic” (n = 558), “worsening” (n = 64), “improving” (n = 15), “chronic high” (n = 55), and “fluctuating symptomatology” (n = 111). The comparison group was the “stable asymptomatic” class. The symptomatic classes were younger and had higher proportion of women, and were also associated with non-white ethnicity, being a current smoker, and having chest pain. Other measures of disease severity, such as a history of myocardial infarction and comorbidities, were not associated with class membership. The highest mean total health care costs across the 3 years were the “chronic high” and “worsening” class, with the lowest being the “improving” and “stable low” classes. The total societal costs for patients in the “chronic high” and “worsening” class were significantly higher, as compared to the “stable low” class.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Uric Acid Crystals Induce Placental Inflammation and Alter Trophoblast Function via an IL-1-Dependent Pathway: Implications for Fetal Growth Restriction

Excessive placental inflammation is associated with several pathological conditions, including stillbirth and fetal growth restriction. Although infection is a known cause of inflammation, a significant proportion of pregnancies have evidence of inflammation without any detectable infection. Inflammation can also be triggered by endogenous mediators, called damage associated molecular patterns or alarmins. One of these damage-associated molecular patterns, uric acid, is increased in the maternal circulation in pathological pregnancies and is a known agonist of the Nlrp3 inflammasome and inducer of inflammation. However, its effects within the placenta and on pregnancy outcomes remain largely unknown. We found that uric acid (monosodium urate [MSU]) crystals induce a proinflammatory profile in isolated human term cytotrophoblast cells, with a predominant secretion of IL-1β and IL-6, a result confirmed in human term placental explants. The proinflammatory effects of MSU crystals were shown to be IL-1-dependent using a caspase-1 inhibitor (inhibits IL-1 maturation) and IL-1Ra (inhibits IL-1 signaling). The proinflammatory effect of MSU crystals was accompanied by trophoblast apoptosis and decreased syncytialization. Correspondingly, administration of MSU crystals to rats during late gestation induced placental inflammation and was associated with fetal growth restriction. These results make a strong case for an active proinflammatory role of MSU crystals at the maternal-fetal interface in pathological pregnancies, and highlight a key mediating role of IL-1. Furthermore, our study describes a novel in vivo animal model of noninfectious inflammation during pregnancy, which is triggered by MSU crystals and leads to reduced fetal growth.

Molecular genetic heterogeneity in undifferentiated endometrial carcinomas

Undifferentiated and dedifferentiated endometrial carcinomas are rare and highly aggressive subtypes of uterine cancer, not well characterized at a molecular level. To investigate whether dedifferentiated carcinomas carry molecular genetic alterations similar to those of pure undifferentiated carcinomas, and to gain insight into the pathogenesis of these tumors, we selected a cohort of 18 undifferentiated endometrial carcinomas, 8 of them with a well-differentiated endometrioid carcinoma component (dedifferentiated endometrioid carcinomas), and studied them by immunohistochemistry and massive parallel and Sanger sequencing. Whole-exome sequencing of the endometrioid and undifferentiated components, as well as normal myometrium, was also carried out in one case. According to The Cancer Genome Atlas classification, we distributed 95% of the undifferentiated carcinomas in this series as follows: (a) hypermutated tumors with loss of any mismatch repair protein expression and microsatellite instability (eight cases, 45%); (b) ultramutated carcinomas carrying mutations in the exonuclease domain of POLE (two cases, 11%); (c) high copy number alterations (copy-number high) tumors group exhibiting only TP53 mutations and high number of alterations detected by FISH (two cases, 11%); and (d) low copy number alterations (copy-number low) tumors with molecular alterations typical of endometrioid endometrial carcinomas (five cases, 28%). Two of the latter cases, however, also had TP53 mutations and higher number of alterations detected by FISH and could have progressed to a copy-number high phenotype. Most dedifferentiated carcinomas belonged to the hypermutated group, whereas pure undifferentiated carcinomas shared molecular genetic alterations with copy-number low or copy-number high tumors. These results indicate that undifferentiated and dedifferentiated endometrial carcinomas are molecularly heterogeneous tumors, which may have prognostic value.

Sterile inflammation and pregnancy complications: a review

Inflammation is essential for successful embryo implantation, pregnancy maintenance and delivery. In the last decade, important advances have been made in regard to endogenous, and therefore non-infectious, initiators of inflammation, which can act through the same receptors as pathogens. These molecules are referred to as damage-associated molecular patterns (DAMPs), and their involvement in reproduction has only recently been unraveled. Even though inflammation is necessary for successful reproduction, untimely activation of inflammatory processes can have devastating effect on pregnancy outcomes. Many DAMPs, such as uric acid, high-mobility group box 1 (HMGB1), interleukin (IL)-1 and cell-free fetal DNA, have been associated with pregnancy complications, such as miscarriages, preeclampsia and preterm birth in preclinical models and in humans. However, the specific contribution of alarmins to these conditions is still under debate, as currently there is lack of information on their mechanism of action. In this review, we discuss the role of sterile inflammation in reproduction, including early implantation and pregnancy complications. Particularly, we focus on major alarmins vastly implicated in numerous sterile inflammatory processes, such as uric acid, HMGB1, IL-1α and cell-free DNA (especially that of fetal origin) while giving an overview of the potential role of other candidate alarmins.

Evidence for effective interventions to reduce mental health-related stigma and discrimination in the medium and long term: systematic review

BACKGROUND

Most research on interventions to counter stigma and discrimination has focused on short-term outcomes and has been conducted in high-income settings.

AIMS

To synthesise what is known globally about effective interventions to reduce mental illness-based stigma and discrimination, in relation first to effectiveness in the medium and long term (minimum 4 weeks), and second to interventions in low- and middle-income countries (LMICs).

METHOD

We searched six databases from 1980 to 2013 and conducted a multi-language Google search for quantitative studies addressing the research questions. Effect sizes were calculated from eligible studies where possible, and narrative syntheses conducted. Subgroup analysis compared interventions with and without social contact.

RESULTS

Eighty studies (n = 422 653) were included in the review. For studies with medium or long-term follow-up (72, of which 21 had calculable effect sizes) median standardised mean differences were 0.54 for knowledge and -0.26 for stigmatising attitudes. Those containing social contact (direct or indirect) were not more effective than those without. The 11 LMIC studies were all from middle-income countries. Effect sizes were rarely calculable for behavioural outcomes or in LMIC studies.

CONCLUSIONS

There is modest evidence for the effectiveness of anti-stigma interventions beyond 4 weeks follow-up in terms of increasing knowledge and reducing stigmatising attitudes. Evidence does not support the view that social contact is the more effective type of intervention for improving attitudes in the medium to long term. Methodologically strong research is needed on which to base decisions on investment in stigma-reducing interventions.

Novel Noncompetitive IL-1 Receptor-Biased Ligand Prevents Infection- and Inflammation-Induced Preterm Birth

Preterm birth (PTB) is firmly linked to inflammation regardless of the presence of infection. Proinflammatory cytokines, including IL-1β, are produced in gestational tissues and can locally upregulate uterine activation proteins. Premature activation of the uterus by inflammation may lead to PTB, and IL-1 has been identified as a key inducer of this condition. However, all currently available IL-1 inhibitors are large molecules that exhibit competitive antagonism properties by inhibiting all IL-1R signaling, including transcription factor NF-κB, which conveys important physiological roles. We hereby demonstrate the efficacy of a small noncompetitive (all-d peptide) IL-1R-biased ligand, termed rytvela (labeled 101.10) in delaying IL-1β-, TLR2-, and TLR4-induced PTB in mice. The 101.10 acts without significant inhibition of NF-κB, and instead selectively inhibits IL-1R downstream stress-associated protein kinases/transcription factor c-jun and Rho GTPase/Rho-associated coiled-coil-containing protein kinase signaling pathways. The 101.10 is effective at decreasing proinflammatory and/or prolabor genes in myometrium tissue and circulating leukocytes in all PTB models independently of NF-κB, undermining NF-κB role in preterm labor. In this work, biased signaling modulation of IL-1R by 101.10 uncovers a novel strategy to prevent PTB without inhibiting NF-κB.

Goya's artwork imaging with Terahertz waves

In this paper we use a Terahertz (THz) time-domain system to image and analyze the structure of an artwork attributed to the Spanish artist Goya painted in 1771. The THz images show features that cannot be seen with optical inspection and complement data obtained with X-ray imaging that provide evidence of its authenticity, which is validated by other independent studies. For instance, a feature with a strong resemblance with one of Goya's known signatures is seen in the THz images. In particular, this paper demonstrates the potential of THz imaging as a complementary technique along with X-ray for the verification and authentication of artwork pieces through the detection of features that remain hidden to optical inspection.

Phenotypic characterization of hereditary epithelial ovarian cancer based on a tissue microarray study

The pathologic and immunohistochemical features of familial epithelial ovarian cancers are not well understood. We have carried out a comprehensive immunohistochemical study of familial ovarian carcinomas from women with and without BRCA1 or BRCA2 mutations, in order to identify specific and/or common features among these different familial case groups (BRCA1, BRCA2 and non-BRCA1/2) and to identify markers of diagnostic value that might help to select more specific treatments. 73 familial primary ovarian carcinomas were analyzed for the expression of 40 antibodies involved in different genetic pathways using a tissue microarray. Serous carcinomas comprised the majority of all three familial case groups. On the other hand, BRCA1 and BRCA2 carcinomas have similar histopathologic features; i.e. they are often high-grade and are usually diagnosed at a more advanced FIGO stage than non-BRCA1/2 carcinomas. In our series, BRCA1 carcinomas had better clinical evolution and they also more frequently over-expressed PR and P53 than BRCA2 and non-BRCA1/2 carcinomas. Unsupervised cluster analysis and survival analysis identified ERCC1 as a potential marker of better clinical outcome for hereditary epithelial ovarian cancer.

GEICO (Spanish Group for Investigation on Ovarian Cancer) treatment guidelines in ovarian cancer 2012

In 2006, under the auspices of The Spanish Research Group for Ovarian Cancer (Spanish initials GEICO), the first "Treatment Guidelines in Ovarian Cancer" were developed and then published in Clinical and Translational Oncology by Poveda Velasco et al. (Clin Transl Oncol 9(5):308-316, 2007). Almost 6 years have elapsed and over this time, we have seen some important developments in the treatment of ovarian cancer. Significant changes were also introduced after the GCIG-sponsored 4th Consensus Conference on Ovarian Cancer by Stuart et al. (Int J Gynecol Cancer 21:750-755, 2011). So we decided to update the treatment guidelines in ovarian cancer and, with this objective, a group of investigators of the GEICO group met in February 2012. This study summarizes the presentations, discussions and evidence that were reviewed during the meeting and during further discussions of the manuscript.

Observation of excited Λ(b)(0) baryons

Using pp collision data corresponding to 1.0 fb(-1) integrated luminosity collected by the LHCb detector, two narrow states are observed in the Λ(b)(0)π(+)π(-) spectrum with masses 5911.97±0.12(stat)±0.02(syst)±0.66(Λ(b)(0) mass) MeV/c(2) and 5919.77±0.08(stat)±0.02(syst)±0.66(Λ(b)(0) mass) MeV/c(2). The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Λ(b)(0) baryons, Λ(b)(*0)(5912) and Λ(b)(*0)(5920).

Expression of E-cadherin in 230 infiltrating ductal breast carcinoma

The immunohistochemical expression of E-cadherin (E-CD) was correlated to differentiation grade, tumor size, axillary lymph node metastasis, hormone receptor status and disease outcome in 230 infiltrating ductal breast carcinomas. E-CD expression was reduced in 116 tumors (50.4%). Reduced E-CD expression was more frequently found in high histological grade and progesterone receptor negative tumors. In contrast, preserved E-CD expression was more frequently observed in tumors with axillary lymph node metastasis, particularly in the group of patients with 1 to 3 positive lymph nodes. A weak association between reduced E-CD expression and shortened overall survival was found in univariate survival analysis, that was lost when the patients were adjusted for other pathological factors in multivariate analysis. These data indicate that E-CD may be considered a differentiation marker in ductal carcinomas of non special type. However, the relationship between E-CD expression and lymph node metastasis and disease outcome remains to be established.

Measurement of relative branching fractions of B decays to ψ(2S) and J/ψ mesons

The relative rates of B-meson decays into J/ψ and ψ(2S) mesons are measured for the three decay modes in pp collisions recorded with the LHCb detector. The ratios of branching fractions ([Formula: see text]) are measured to be [Formula: see text] where the third uncertainty is from the ratio of the ψ(2S) and J/ψ branching fractions to μ⁺μ^-.

Measurement of ψ(2S) meson production in pp collisions at [Formula: see text]

The differential cross-section for the inclusive production of ψ(2S) mesons in pp collisions at [Formula: see text] has been measured with the LHCb detector. The data sample corresponds to an integrated luminosity of 36 pb^-1. The ψ(2S) mesons are reconstructed in the decay channels ψ(2S)→μ⁺μ^- and ψ(2S)→J/ψπ⁺π^-, with the J/ψ meson decaying into two muons. Results are presented both for promptly produced ψ(2S) mesons and for those originating from b-hadron decays. In the kinematic range p_T(ψ(2S))≤16 GeV/c and 2<y(ψ(2S))≤4.5 we measure [Formula: see text] where the last uncertainty on the prompt cross-section is due to the unknown ψ(2S) polarization. Recent QCD calculations are found to be in good agreement with our measurements. Combining the present result with the LHCb J/ψ measurements we determine the inclusive branching fraction [Formula: see text] where the last uncertainty is due to the [Formula: see text], [Formula: see text] and [Formula: see text] branching fraction uncertainties.

First observation of the decay B(c)+ → J/ψπ(+) π- π+

The decay B(c)(+) → J/ψπ(+) π(-) π(+) is observed for the first time, using 0.8 fb(-1) of pp collisions at sqrt[s] = 7 TeV collected by the LHCb experiment. The ratio of branching fractions B(B(c)(+) → J/ψπ(+) π(-) π(+))/B(B(c)(+)→J/ψπ^{+}) is measured to be 2.41 ± 0.30 ± 0.33, where the first uncertainty is statistical and the second is systematic. The result is in agreement with theoretical predictions.

Determination of the sign of the decay width difference in the B(s)(0) system

The interference between the K+ K- S-wave and P-wave amplitudes in B(s)(0) → J/ψK+ K- decays with the K+ K- pairs in the region around the ϕ(1020) resonance is used to determine the variation of the difference of the strong phase between these amplitudes as a function of K+ K- invariant mass. Combined with the results from our CP asymmetry measurement in B(s)(0) → J/ψϕ decays, we conclude that the B(s)(0) mass eigenstate that is almost CP = +1 is lighter and decays faster than the mass eigenstate that is almost CP = -1. This determines the sign of the decay width difference ΔΓ(s) ≡ Γ(L) - Γ(H) to be positive. Our result also resolves the ambiguity in the past measurements of the CP violating phase ϕ(s) to be close to zero rather than π. These conclusions are in agreement with the standard model expectations.

Strong constraints on the rare decays B(s)(0) → μ+ μ- and B0 → μ+ μ-

A search for B(s)(0) → μ+ μ- and B0 → μ+ μ decays is performed using 1.0  fb(-1) of pp collision data collected at sqrt[s] = 7  TeV with the LHCb experiment at the Large Hadron Collider. For both decays, the number of observed events is consistent with expectation from background and standard model signal predictions. Upper limits on the branching fractions are determined to be B(B(s)(0) → μ+ μ-) < 4.5(3.8)×10(-9) and B(B0 → μ+ μ-) < 1.0(0.81)×10(-9) at 95% (90%) confidence level.

Opposite-side flavour tagging of B mesons at the LHCb experiment

The calibration and performance of the opposite-side flavour tagging algorithms used for the measurements of time-dependent asymmetries at the LHCb experiment are described. The algorithms have been developed using simulated events and optimized and calibrated with B⁺→J/ψK⁺, B⁰→J/ψK^∗0 and B⁰→D^∗-μ⁺ν_μ decay modes with 0.37 fb^-1 of data collected in pp collisions at [Formula: see text] during the 2011 physics run. The opposite-side tagging power is determined in the B⁺→J/ψK⁺ channel to be (2.10±0.08±0.24) %, where the first uncertainty is statistical and the second is systematic.

Measurement of production in collisions at [Formula: see text]

The production of ϒ(1S), ϒ(2S) and ϒ(3S) mesons in proton-proton collisions at the centre-of-mass energy of [Formula: see text] is studied with the LHCb detector. The analysis is based on a data sample of 25 pb-1 collected at the Large Hadron Collider. The ϒ mesons are reconstructed in the decay mode ϒ→μ+μ- and the signal yields are extracted from a fit to the μ+μ- invariant mass distributions. The differential production cross-sections times dimuon branching fractions are measured as a function of the ϒ transverse momentum pT and rapidity y, over the range pT <15 GeV/c and 2.0 Collapse

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Affiliation(s)

The LHCb Collaboration />CERN, 1211 Geneva 23, Switzerland
R. Aaij />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
C. Abellan Beteta />Universitat de Barcelona, Barcelona, Spain
B. Adeva />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
M. Adinolfi />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
C. Adrover />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
A. Affolder />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
Z. Ajaltouni />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
J. Albrecht />European Organization for Nuclear Research (CERN), Geneva, Switzerland
F. Alessio />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Alexander />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
G. Alkhazov />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
P. Alvarez Cartelle />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. A. Alves />Sezione INFN di Roma La Sapienza, Roma, Italy
S. Amato />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
Y. Amhis />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
J. Anderson />Physik-Institut, Universität Zürich, Zürich, Switzerland
R. B. Appleby />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
O. Aquines Gutierrez />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Archilli />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
L. Arrabito />CC-IN2P3, CNRS/IN2P3, Lyon-Villeurbanne, France
A. Artamonov />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Artuso />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Syracuse University, Syracuse, NY United States
E. Aslanides />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
G. Auriemma />Sezione INFN di Roma La Sapienza, Roma, Italy
S. Bachmann />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
J. J. Back />Department of Physics, University of Warwick, Coventry, United Kingdom
D. S. Bailey />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
V. Balagura />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
W. Baldini />Sezione INFN di Ferrara, Ferrara, Italy
R. J. Barlow />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
C. Barschel />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Barsuk />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
W. Barter />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
A. Bates />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
C. Bauer />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
Th. Bauer />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Bay />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
I. Bediaga />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Belogurov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
K. Belous />Institute for High Energy Physics (IHEP), Protvino, Russia
I. Belyaev />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
E. Ben-Haim />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
M. Benayoun />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
G. Bencivenni />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
S. Benson />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
J. Benton />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
R. Bernet />Physik-Institut, Universität Zürich, Zürich, Switzerland
M.-O. Bettler />Sezione INFN di Firenze, Firenze, Italy
M. van Beuzekom />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Bien />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Bifani />School of Physics, University College Dublin, Dublin, Ireland
T. Bird />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Bizzeti />Sezione INFN di Firenze, Firenze, Italy
P. M. Bjørnstad />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
T. Blake />European Organization for Nuclear Research (CERN), Geneva, Switzerland
F. Blanc />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Blanks />Imperial College London, London, United Kingdom
J. Blouw />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Blusk />Syracuse University, Syracuse, NY United States
A. Bobrov />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
V. Bocci />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Bondar />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
N. Bondar />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
W. Bonivento />Sezione INFN di Cagliari, Cagliari, Italy
S. Borghi />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Borgia />Syracuse University, Syracuse, NY United States
T. J. V. Bowcock />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
C. Bozzi />Sezione INFN di Ferrara, Ferrara, Italy
T. Brambach />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
J. van den Brand />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
J. Bressieux />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
D. Brett />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
M. Britsch />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
T. Britton />Syracuse University, Syracuse, NY United States
N. H. Brook />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
H. Brown />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
K. de Bruyn />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
A. Büchler-Germann />Physik-Institut, Universität Zürich, Zürich, Switzerland
I. Burducea />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Bursche />Physik-Institut, Universität Zürich, Zürich, Switzerland
J. Buytaert />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Cadeddu />Sezione INFN di Cagliari, Cagliari, Italy
O. Callot />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
M. Calvi />Sezione INFN di Milano Bicocca, Milano, Italy
M. Calvo Gomez />Universitat de Barcelona, Barcelona, Spain
A. Camboni />Universitat de Barcelona, Barcelona, Spain
P. Campana />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Carbone />Sezione INFN di Bologna, Bologna, Italy
G. Carboni />Sezione INFN di Roma Tor Vergata, Roma, Italy
R. Cardinale />Sezione INFN di Genova, Genova, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Cardini />Sezione INFN di Cagliari, Cagliari, Italy
L. Carson />Imperial College London, London, United Kingdom
K. Carvalho Akiba />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
G. Casse />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
M. Cattaneo />European Organization for Nuclear Research (CERN), Geneva, Switzerland
Ch. Cauet />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Charles />Department of Physics, University of Oxford, Oxford, United Kingdom
Ph. Charpentier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
N. Chiapolini />Physik-Institut, Universität Zürich, Zürich, Switzerland
K. Ciba />European Organization for Nuclear Research (CERN), Geneva, Switzerland
X. Cid Vidal />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. Ciezarek />Imperial College London, London, United Kingdom
P. E. L. Clarke />European Organization for Nuclear Research (CERN), Geneva, Switzerland />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Clemencic />European Organization for Nuclear Research (CERN), Geneva, Switzerland
H. V. Cliff />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
J. Closier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Coca />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
V. Coco />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J. Cogan />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
P. Collins />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Comerma-Montells />Universitat de Barcelona, Barcelona, Spain
F. Constantin />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Contu />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Cook />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
M. Coombes />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
G. Corti />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Couturier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. A. Cowan />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Currie />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
C. D’Ambrosio />European Organization for Nuclear Research (CERN), Geneva, Switzerland
P. David />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
P. N. Y. David />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
I. De Bonis />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
S. De Capua />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. De Cian />Physik-Institut, Universität Zürich, Zürich, Switzerland
F. De Lorenzi />School of Physics, University College Dublin, Dublin, Ireland
J. M. De Miranda />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
L. De Paula />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. De Simone />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
D. Decamp />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
M. Deckenhoff />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
H. Degaudenzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
L. Del Buono />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
C. Deplano />Sezione INFN di Cagliari, Cagliari, Italy
D. Derkach />Sezione INFN di Bologna, Bologna, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Deschamps />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
F. Dettori />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
J. Dickens />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
H. Dijkstra />European Organization for Nuclear Research (CERN), Geneva, Switzerland
P. Diniz Batista />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
F. Domingo Bonal />Universitat de Barcelona, Barcelona, Spain
S. Donleavy />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
F. Dordei />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
A. Dosil Suárez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
D. Dossett />Department of Physics, University of Warwick, Coventry, United Kingdom
A. Dovbnya />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
F. Dupertuis />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Dzhelyadin />Institute for High Energy Physics (IHEP), Protvino, Russia
A. Dziurda />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
S. Easo />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
U. Egede />Imperial College London, London, United Kingdom
V. Egorychev />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
S. Eidelman />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
D. van Eijk />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Eisele />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
S. Eisenhardt />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
R. Ekelhof />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
L. Eklund />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
Ch. Elsasser />Physik-Institut, Universität Zürich, Zürich, Switzerland
D. Elsby />University of Birmingham, Birmingham, United Kingdom
D. Esperante Pereira />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Falabella />Sezione INFN di Bologna, Bologna, Italy />Sezione INFN di Ferrara, Ferrara, Italy
E. Fanchini />Sezione INFN di Milano Bicocca, Milano, Italy
C. Färber />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
G. Fardell />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
C. Farinelli />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
S. Farry />School of Physics, University College Dublin, Dublin, Ireland
V. Fave />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
V. Fernandez Albor />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
M. Ferro-Luzzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Filippov />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
C. Fitzpatrick />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Fontana />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Fontanelli />Sezione INFN di Genova, Genova, Italy
R. Forty />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Francisco />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
M. Frank />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Frei />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Frosini />Sezione INFN di Firenze, Firenze, Italy
S. Furcas />Sezione INFN di Milano Bicocca, Milano, Italy
A. Gallas Torreira />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
D. Galli />Sezione INFN di Bologna, Bologna, Italy
M. Gandelman />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Gandini />Department of Physics, University of Oxford, Oxford, United Kingdom
Y. Gao />Center for High Energy Physics, Tsinghua University, Beijing, China
J-C. Garnier />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Garofoli />Syracuse University, Syracuse, NY United States
J. Garra Tico />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
L. Garrido />Universitat de Barcelona, Barcelona, Spain
D. Gascon />Universitat de Barcelona, Barcelona, Spain
C. Gaspar />European Organization for Nuclear Research (CERN), Geneva, Switzerland
R. Gauld />Department of Physics, University of Oxford, Oxford, United Kingdom
N. Gauvin />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Gersabeck />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Gershon />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Department of Physics, University of Warwick, Coventry, United Kingdom
Ph. Ghez />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
V. Gibson />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
V. V. Gligorov />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Göbel />Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
D. Golubkov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
A. Golutvin />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Imperial College London, London, United Kingdom
A. Gomes />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
H. Gordon />Department of Physics, University of Oxford, Oxford, United Kingdom
M. Grabalosa Gándara />Universitat de Barcelona, Barcelona, Spain
R. Graciani Diaz />Universitat de Barcelona, Barcelona, Spain
L. A. Granado Cardoso />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Graugés />Universitat de Barcelona, Barcelona, Spain
G. Graziani />Sezione INFN di Firenze, Firenze, Italy
A. Grecu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
E. Greening />Department of Physics, University of Oxford, Oxford, United Kingdom
S. Gregson />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
B. Gui />Syracuse University, Syracuse, NY United States
E. Gushchin />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
Yu. Guz />Institute for High Energy Physics (IHEP), Protvino, Russia
T. Gys />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Hadjivasiliou />Syracuse University, Syracuse, NY United States
G. Haefeli />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Haen />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. C. Haines />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
T. Hampson />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
S. Hansmann-Menzemer />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
R. Harji />Imperial College London, London, United Kingdom
N. Harnew />Department of Physics, University of Oxford, Oxford, United Kingdom
J. Harrison />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
P. F. Harrison />Department of Physics, University of Warwick, Coventry, United Kingdom
T. Hartmann />Physikalisches Institut, Universität Rostock, Rostock, Germany
J. He />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
V. Heijne />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
K. Hennessy />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
P. Henrard />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
J. A. Hernando Morata />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
E. van Herwijnen />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Hicks />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
K. Holubyev />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
P. Hopchev />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
W. Hulsbergen />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
P. Hunt />Department of Physics, University of Oxford, Oxford, United Kingdom
T. Huse />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
R. S. Huston />School of Physics, University College Dublin, Dublin, Ireland
D. Hutchcroft />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
D. Hynds />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
V. Iakovenko />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
P. Ilten />School of Physics, University College Dublin, Dublin, Ireland
J. Imong />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
R. Jacobsson />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Jaeger />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Jahjah Hussein />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
E. Jans />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Jansen />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
P. Jaton />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
B. Jean-Marie />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
F. Jing />Center for High Energy Physics, Tsinghua University, Beijing, China
M. John />Department of Physics, University of Oxford, Oxford, United Kingdom
D. Johnson />Department of Physics, University of Oxford, Oxford, United Kingdom
C. R. Jones />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
B. Jost />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Kaballo />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
S. Kandybei />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
M. Karacson />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. M. Karbach />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
J. Keaveney />School of Physics, University College Dublin, Dublin, Ireland
I. R. Kenyon />University of Birmingham, Birmingham, United Kingdom
U. Kerzel />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Ketel />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
A. Keune />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
B. Khanji />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
Y. M. Kim />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Knecht />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. F. Koopman />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
P. Koppenburg />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Korolev />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
A. Kozlinskiy />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
L. Kravchuk />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia
K. Kreplin />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Kreps />Department of Physics, University of Warwick, Coventry, United Kingdom
G. Krocker />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
P. Krokovny />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
F. Kruse />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
K. Kruzelecki />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Kucharczyk />Sezione INFN di Milano Bicocca, Milano, Italy />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland />European Organization for Nuclear Research (CERN), Geneva, Switzerland
T. Kvaratskheliya />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
V. N. La Thi />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
D. Lacarrere />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Lafferty />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
A. Lai />Sezione INFN di Cagliari, Cagliari, Italy
D. Lambert />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
R. W. Lambert />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
E. Lanciotti />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Lanfranchi />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
C. Langenbruch />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
T. Latham />Department of Physics, University of Warwick, Coventry, United Kingdom
C. Lazzeroni />University of Birmingham, Birmingham, United Kingdom
R. Le Gac />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
J. van Leerdam />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J.-P. Lees />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
R. Lefèvre />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
A. Leflat />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Lefrançois />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
O. Leroy />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
T. Lesiak />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
L. Li />Center for High Energy Physics, Tsinghua University, Beijing, China
L. Li Gioi />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
M. Lieng />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Liles />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
R. Lindner />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Linn />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
B. Liu />Center for High Energy Physics, Tsinghua University, Beijing, China
G. Liu />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. von Loeben />Sezione INFN di Milano Bicocca, Milano, Italy
J. H. Lopes />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
E. Lopez Asamar />Universitat de Barcelona, Barcelona, Spain
N. Lopez-March />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
H. Lu />Center for High Energy Physics, Tsinghua University, Beijing, China
J. Luisier />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Mac Raighne />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
F. Machefert />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
I. V. Machikhiliyan />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
F. Maciuc />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
O. Maev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. Magnin />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Malde />Department of Physics, University of Oxford, Oxford, United Kingdom
R. M. D. Mamunur />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. Manca />Sezione INFN di Cagliari, Cagliari, Italy
G. Mancinelli />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
N. Mangiafave />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
U. Marconi />Sezione INFN di Bologna, Bologna, Italy
R. Märki />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
J. Marks />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
G. Martellotti />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Martens />LPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, France
L. Martin />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Martín Sánchez />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
D. Martinez Santos />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Massafferri />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
Z. Mathe />School of Physics, University College Dublin, Dublin, Ireland
C. Matteuzzi />Sezione INFN di Milano Bicocca, Milano, Italy
M. Matveev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
E. Maurice />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
B. Maynard />Syracuse University, Syracuse, NY United States
A. Mazurov />Sezione INFN di Ferrara, Ferrara, Italy />Institute for Nuclear Research of the Russian Academy of Sciences (INR RAN), Moscow, Russia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
G. McGregor />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
R. McNulty />School of Physics, University College Dublin, Dublin, Ireland
M. Meissner />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Merk />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
J. Merkel />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
R. Messi />Sezione INFN di Roma Tor Vergata, Roma, Italy
S. Miglioranzi />European Organization for Nuclear Research (CERN), Geneva, Switzerland
D. A. Milanes />Sezione INFN di Bari, Bari, Italy
M.-N. Minard />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
J. Molina Rodriguez />Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil
S. Monteil />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
D. Moran />School of Physics, University College Dublin, Dublin, Ireland
P. Morawski />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
R. Mountain />Syracuse University, Syracuse, NY United States
I. Mous />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
F. Muheim />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
K. Müller />Physik-Institut, Universität Zürich, Zürich, Switzerland
R. Muresan />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
B. Muryn />AGH University of Science and Technology, Kraków, Poland
B. Muster />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Musy />Universitat de Barcelona, Barcelona, Spain
J. Mylroie-Smith />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
P. Naik />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
T. Nakada />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
R. Nandakumar />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
I. Nasteva />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
M. Nedos />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Needham />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
N. Neufeld />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. D. Nguyen />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
C. Nguyen-Mau />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. Nicol />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
V. Niess />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
N. Nikitin />Institute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, Russia
A. Nomerotski />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Department of Physics, University of Oxford, Oxford, United Kingdom
A. Novoselov />Institute for High Energy Physics (IHEP), Protvino, Russia
A. Oblakowska-Mucha />AGH University of Science and Technology, Kraków, Poland
V. Obraztsov />Institute for High Energy Physics (IHEP), Protvino, Russia
S. Oggero />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
S. Ogilvy />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
O. Okhrimenko />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
R. Oldeman />Sezione INFN di Cagliari, Cagliari, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M. Orlandea />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
J. M. Otalora Goicochea />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Owen />Imperial College London, London, United Kingdom
K. Pal />Syracuse University, Syracuse, NY United States
J. Palacios />Physik-Institut, Universität Zürich, Zürich, Switzerland
A. Palano />Sezione INFN di Bari, Bari, Italy
M. Palutan />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
J. Panman />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Papanestis />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
M. Pappagallo />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
C. Parkes />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
C. J. Parkinson />Imperial College London, London, United Kingdom
G. Passaleva />Sezione INFN di Firenze, Firenze, Italy
G. D. Patel />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
M. Patel />Imperial College London, London, United Kingdom
S. K. Paterson />Imperial College London, London, United Kingdom
G. N. Patrick />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
C. Patrignani />Sezione INFN di Genova, Genova, Italy
C. Pavel-Nicorescu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
A. Pazos Alvarez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Pellegrino />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
G. Penso />Sezione INFN di Roma La Sapienza, Roma, Italy
M. Pepe Altarelli />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Perazzini />Sezione INFN di Bologna, Bologna, Italy
D. L. Perego />Sezione INFN di Milano Bicocca, Milano, Italy
E. Perez Trigo />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Pérez-Calero Yzquierdo />Universitat de Barcelona, Barcelona, Spain
P. Perret />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
M. Perrin-Terrin />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
G. Pessina />Sezione INFN di Milano Bicocca, Milano, Italy
A. Petrella />Sezione INFN di Ferrara, Ferrara, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Petrolini />Sezione INFN di Genova, Genova, Italy
A. Phan />Syracuse University, Syracuse, NY United States
E. Picatoste Olloqui />Universitat de Barcelona, Barcelona, Spain
B. Pie Valls />Universitat de Barcelona, Barcelona, Spain
B. Pietrzyk />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
T. Pilař />Department of Physics, University of Warwick, Coventry, United Kingdom
D. Pinci />Sezione INFN di Roma La Sapienza, Roma, Italy
R. Plackett />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
S. Playfer />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
M. Plo Casasus />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. Polok />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
A. Poluektov />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia />Department of Physics, University of Warwick, Coventry, United Kingdom
E. Polycarpo />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
D. Popov />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
B. Popovici />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
C. Potterat />Universitat de Barcelona, Barcelona, Spain
A. Powell />Department of Physics, University of Oxford, Oxford, United Kingdom
J. Prisciandaro />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
V. Pugatch />Institute for Nuclear Research of the National Academy of Sciences (KINR), Kyiv, Ukraine
A. Puig Navarro />Universitat de Barcelona, Barcelona, Spain
W. Qian />Syracuse University, Syracuse, NY United States
J. H. Rademacker />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
B. Rakotomiaramanana />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. S. Rangel />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
I. Raniuk />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
G. Raven />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
S. Redford />Department of Physics, University of Oxford, Oxford, United Kingdom
M. M. Reid />Department of Physics, University of Warwick, Coventry, United Kingdom
A. C. dos Reis />Centro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, Brazil
S. Ricciardi />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
A. Richards />Imperial College London, London, United Kingdom
K. Rinnert />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
D. A. Roa Romero />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
P. Robbe />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
E. Rodrigues />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
F. Rodrigues />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
P. Rodriguez Perez />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
G. J. Rogers />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
S. Roiser />European Organization for Nuclear Research (CERN), Geneva, Switzerland
V. Romanovsky />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Rosello />Universitat de Barcelona, Barcelona, Spain
J. Rouvinet />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
T. Ruf />European Organization for Nuclear Research (CERN), Geneva, Switzerland
H. Ruiz />Universitat de Barcelona, Barcelona, Spain
G. Sabatino />Sezione INFN di Roma Tor Vergata, Roma, Italy
J. J. Saborido Silva />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
N. Sagidova />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
P. Sail />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
B. Saitta />Sezione INFN di Cagliari, Cagliari, Italy
C. Salzmann />Physik-Institut, Universität Zürich, Zürich, Switzerland
M. Sannino />Sezione INFN di Genova, Genova, Italy
R. Santacesaria />Sezione INFN di Roma La Sapienza, Roma, Italy
C. Santamarina Rios />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
R. Santinelli />European Organization for Nuclear Research (CERN), Geneva, Switzerland
E. Santovetti />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. Sapunov />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
A. Sarti />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
C. Satriano />Sezione INFN di Roma La Sapienza, Roma, Italy
A. Satta />Sezione INFN di Roma Tor Vergata, Roma, Italy
M. Savrie />Sezione INFN di Ferrara, Ferrara, Italy
D. Savrina />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
P. Schaack />Imperial College London, London, United Kingdom
M. Schiller />Nikhef National Institute for Subatomic Physics and Vrije Universiteit, Amsterdam, The Netherlands
S. Schleich />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Schlupp />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Schmelling />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
B. Schmidt />European Organization for Nuclear Research (CERN), Geneva, Switzerland
O. Schneider />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Schopper />European Organization for Nuclear Research (CERN), Geneva, Switzerland
M.-H. Schune />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
R. Schwemmer />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Sciascia />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
A. Sciubba />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy
M. Seco />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Semennikov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
K. Senderowska />AGH University of Science and Technology, Kraków, Poland
I. Sepp />Imperial College London, London, United Kingdom
N. Serra />Physik-Institut, Universität Zürich, Zürich, Switzerland
J. Serrano />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
P. Seyfert />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
M. Shapkin />Institute for High Energy Physics (IHEP), Protvino, Russia
I. Shapoval />European Organization for Nuclear Research (CERN), Geneva, Switzerland />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
P. Shatalov />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
Y. Shcheglov />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
T. Shears />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
L. Shekhtman />Budker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, Russia
O. Shevchenko />NSC Kharkiv Institute of Physics and Technology (NSC KIPT), Kharkiv, Ukraine
V. Shevchenko />Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia
A. Shires />Imperial College London, London, United Kingdom
R. Silva Coutinho />Department of Physics, University of Warwick, Coventry, United Kingdom
T. Skwarnicki />Syracuse University, Syracuse, NY United States
N. A. Smith />Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom
E. Smith />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom />Department of Physics, University of Oxford, Oxford, United Kingdom
K. Sobczak />Clermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, France
F. J. P. Soler />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
A. Solomin />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
F. Soomro />Laboratori Nazionali dell’INFN di Frascati, Frascati, Italy />European Organization for Nuclear Research (CERN), Geneva, Switzerland
B. Souza De Paula />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
B. Spaan />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
A. Sparkes />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
P. Spradlin />School of Physics and Astronomy, University of Glasgow, Glasgow, United Kingdom
F. Stagni />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Stahl />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
O. Steinkamp />Physik-Institut, Universität Zürich, Zürich, Switzerland
S. Stoica />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
S. Stone />European Organization for Nuclear Research (CERN), Geneva, Switzerland />Syracuse University, Syracuse, NY United States
B. Storaci />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Straticiuc />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
U. Straumann />Physik-Institut, Universität Zürich, Zürich, Switzerland
V. K. Subbiah />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. Swientek />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Szczekowski />Soltan Institute for Nuclear Studies, Warsaw, Poland
P. Szczypka />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
T. Szumlak />AGH University of Science and Technology, Kraków, Poland
S. T’Jampens />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
E. Teodorescu />Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
F. Teubert />European Organization for Nuclear Research (CERN), Geneva, Switzerland
C. Thomas />Department of Physics, University of Oxford, Oxford, United Kingdom
E. Thomas />European Organization for Nuclear Research (CERN), Geneva, Switzerland
J. van Tilburg />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
V. Tisserand />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France
M. Tobin />Physik-Institut, Universität Zürich, Zürich, Switzerland
S. Topp-Joergensen />Department of Physics, University of Oxford, Oxford, United Kingdom
N. Torr />Department of Physics, University of Oxford, Oxford, United Kingdom
E. Tournefier />LAPP, Université de Savoie, CNRS/IN2P3, Annecy-Le-Vieux, France />Imperial College London, London, United Kingdom
S. Tourneur />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
M. T. Tran />Ecole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, Switzerland
A. Tsaregorodtsev />CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
N. Tuning />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
M. Ubeda Garcia />European Organization for Nuclear Research (CERN), Geneva, Switzerland
A. Ukleja />Soltan Institute for Nuclear Studies, Warsaw, Poland
P. Urquijo />Syracuse University, Syracuse, NY United States
U. Uwer />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
V. Vagnoni />Sezione INFN di Bologna, Bologna, Italy
G. Valenti />Sezione INFN di Bologna, Bologna, Italy
R. Vazquez Gomez />Universitat de Barcelona, Barcelona, Spain
P. Vazquez Regueiro />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
S. Vecchi />Sezione INFN di Ferrara, Ferrara, Italy
J. J. Velthuis />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
M. Veltri />Sezione INFN di Firenze, Firenze, Italy
B. Viaud />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
I. Videau />LAL, Université Paris-Sud, CNRS/IN2P3, Orsay, France
D. Vieira />Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
X. Vilasis-Cardona />Universitat de Barcelona, Barcelona, Spain
J. Visniakov />Universidad de Santiago de Compostela, Santiago de Compostela, Spain
A. Vollhardt />Physik-Institut, Universität Zürich, Zürich, Switzerland
D. Volyanskyy />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
D. Voong />H.H. Wills Physics Laboratory, University of Bristol, Bristol, United Kingdom
A. Vorobyev />Petersburg Nuclear Physics Institute (PNPI), Gatchina, Russia
H. Voss />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
S. Wandernoth />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
J. Wang />Syracuse University, Syracuse, NY United States
D. R. Ward />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
N. K. Watson />University of Birmingham, Birmingham, United Kingdom
A. D. Webber />School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
D. Websdale />Imperial College London, London, United Kingdom
M. Whitehead />Department of Physics, University of Warwick, Coventry, United Kingdom
D. Wiedner />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
L. Wiggers />Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands
G. Wilkinson />Department of Physics, University of Oxford, Oxford, United Kingdom
M. P. Williams />Department of Physics, University of Warwick, Coventry, United Kingdom />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
M. Williams />Imperial College London, London, United Kingdom
F. F. Wilson />STFC Rutherford Appleton Laboratory, Didcot, United Kingdom
J. Wishahi />Fakultät Physik, Technische Universität Dortmund, Dortmund, Germany
M. Witek />Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków, Poland
W. Witzeling />European Organization for Nuclear Research (CERN), Geneva, Switzerland
S. A. Wotton />Cavendish Laboratory, University of Cambridge, Cambridge, United Kingdom
K. Wyllie />European Organization for Nuclear Research (CERN), Geneva, Switzerland
Y. Xie />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
F. Xing />Department of Physics, University of Oxford, Oxford, United Kingdom
Z. Xing />Syracuse University, Syracuse, NY United States
Z. Yang />Center for High Energy Physics, Tsinghua University, Beijing, China
R. Young />School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom
O. Yushchenko />Institute for High Energy Physics (IHEP), Protvino, Russia
M. Zangoli />Sezione INFN di Bologna, Bologna, Italy
M. Zavertyaev />Max-Planck-Institut für Kernphysik (MPIK), Heidelberg, Germany
F. Zhang />Center for High Energy Physics, Tsinghua University, Beijing, China
L. Zhang />Syracuse University, Syracuse, NY United States
W. C. Zhang />School of Physics, University College Dublin, Dublin, Ireland
Y. Zhang />Center for High Energy Physics, Tsinghua University, Beijing, China
A. Zhelezov />Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
L. Zhong />Center for High Energy Physics, Tsinghua University, Beijing, China
A. Zvyagin />European Organization for Nuclear Research (CERN), Geneva, Switzerland

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First evidence of direct CP violation in charmless two-body decays of Bs0 mesons

Using a data sample corresponding to an integrated luminosity of 0.35  fb-1 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of Bs0} mesons to K±π∓ pairs, ACP(Bs0→Kπ)=0.27±0.08(stat)±0.02(syst), with a significance of 3.3σ. Furthermore, we report the most precise measurement of CP violation in the decays of B0 mesons to K±π∓ pairs, ACP(B0→Kπ)=-0.088±0.011(stat)±0.008(syst), with a significance exceeding 6σ.

Differential branching fraction and angular analysis of the decay B0 → K*0 μ+ μ-

The angular distributions and the partial branching fraction of the decay B0 → K*0 μ+ μ- are studied by using an integrated luminosity of 0.37  fb(-1) of data collected with the LHCb detector. The forward-backward asymmetry of the muons, A(FB), the fraction of longitudinal polarization, F(L), and the partial branching fraction dB/dq2 are determined as a function of the dimuon invariant mass. The measurements are in good agreement with the standard model predictions and are the most precise to date. In the dimuon invariant mass squared range 1.00-6.00  GeV2/c4, the results are A(FB)=-0.06(-0.14)(+0.13)±0.04, F(L)=0.55±0.10±0.03, and dB/dq2=(0.42±0.06±0.03)×10(-7)  c4/GeV2. In each case, the first error is statistical and the second systematic.

First observation of the decays B(0) → D(+)K(-)π(+)π(-) and B(-) → D(0)K(-)π(+)π(-)

First observations of the Cabibbo-suppressed decays B(0) → D(+)K(-)π(+)π(-) and B(-) → D(0)K(-)π(+)π(-) are reported using 35 pb(-1) of data collected with the LHCb detector. Their branching fractions are measured with respect to the corresponding Cabibbo-favored decays, from which we obtain B(B(0) → D(+)K(-)π(+)π(-))/B(B(0) → D(+)π(-)π(+)π(-))=(5.9±1.1±0.5)×10(-2) and B(B(-) → D(0)K(-)π(+)π(-))/B(B(-) → D(0)π(-)π(+)π(-))=(9.4±1.3±0.9)×10(-2), where the uncertainties are statistical and systematic, respectively. The B(-) → D(0)K(-)π(+)π(-) decay is particularly interesting, as it can be used in a similar way to B(-) → D(0)K(-) to measure the Cabibbo-Kobayashi-Maskawa phase γ.

The new truncated somatostatin receptor variant sst5TMD4 is associated to poor prognosis in breast cancer and increases malignancy in MCF-7 cells

Somatostatin receptors (sst1-5) are present in different types of tumors, where they inhibit key cellular processes such as proliferation and invasion. Although ssts are densely expressed in breast cancer, especially sst2, their role and therapeutic potential remain uncertain. Recently, we identified a new truncated sst5 variant, sst5TMD4, which is related to the abnormal response of certain pituitary tumors to treatment with somatostatin analogs. Here, we investigated the possible role of sst5TMD4 in breast cancer. This study revealed that sst5TMD4 is absent in normal mammary gland, but is abundant in a subset of poorly differentiated human breast tumors, where its expression correlated to that of sst2. Moreover, in the MCF-7 breast cancer model cell, sst5TMD4 expression increased malignancy features such as invasion and proliferation abilities (both in cell cultures and nude mice). This was likely mediated by sst5TMD4-induced increase in phosphorylated extracellular signal-regulated kinases 1 and 2 and p-Akt levels, and cyclin D3 and Arp2/3 complex expression, which also led to mesenchymal-like phenotype. Interestingly, sst5TMD4 interacts physically with sst2 and thereby alters its signaling, enabling disruption of sst2 inhibitory feedback and providing a plausible basis for our findings. These results suggest that sst5TMD4 could be involved in the pathophysiology of certain types of breast tumors.

Observation of B(s)(0) → J/ψf(2)'(1525) in J/ψK+ K- final states

The decay B(s)(0) → J/ψK+ K- is investigated using 0.16  fb(-1) of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at higher K+ K- masses have not previously been studied. In the K+ K- mass spectrum we observe a significant signal in the f(2)'(1525) region as well as a nonresonant component. After subtracting the nonresonant component, we find B(B(s)(0) → J/ψf(2)'(1525))/B(B(s)(0) → J/ψϕ) = (26.4 ± 2.7 ± 2.4)%.

Evidence for CP violation in time-integrated D0→h(-)h(+) decay rates

A search for time-integrated CP violation in D(0)→h(-)h(+) (h=K, π) decays is presented using 0.62 fb(-1) of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D(*+)→D(0)π(+) and D(*-)→D[over ¯](0)π(-) decay chains. The difference in CP asymmetry between D(0)→K(-)K(+) and D(0)→π(-)π(+), ΔA(CP)≡A(CP)(K(-)K(+))-A(CP)(π(-)π(+)), is measured to be [-0.82±0.21(stat)±0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations.

Search for lepton number violating decays B+ → π- μ+ μ+ and B+ → K- μ+ μ+

A search is performed for the lepton number violating decay B+ → h- μ+ μ+, where h- represents a K- or a π-, using an integrated luminosity of 36  pb(-1) of data collected with the LHCb detector. The decay is forbidden in the standard model but allowed in models with a Majorana neutrino. No signal is observed in either channel and limits of B(B+ → K- μ+ μ+) < 5.4×10(-8) and B(B+ → π- μ+ μ+) < 5.8×10(-8) are set at the 95% confidence level. These improve the previous best limits by factors of 40 and 30, respectively.

Measurement of the CP-violating phase ϕ(s) in the decay B(s)(0) → J/ψϕ

We present a measurement of the time-dependent CP-violating asymmetry in B(s)(0) → J/ψϕ decays, using data collected with the LHCb detector at the LHC. The decay time distribution of B(s)(0) → J/ψϕ is characterized by the decay widths Γ(H) and Γ(L) of the heavy and light mass eigenstates, respectively, of the B(s)(0) - B(s)(0) system and by a CP-violating phase ϕ(s). In a sample of about 8500 B(s)(0) → J/ψϕ events isolated from 0.37  fb(-1) of pp collisions at sqrt[s] = 7  TeV, we measure ϕ(s) = 0.15 ± 0.18(stat) ± 0.06(syst)  rad. We also find an average B(s)(0) decay width Γ(s) ≡ (Γ(L) + Γ(H))/2 = 0.657 ± 0.009(stat) ± 0.008(syst)  ps(-1) and a decay width difference ΔΓ(s) ≡ Γ(L) - Γ(H) = 0.123 ± 0.029(stat) ± 0.011(syst)  ps(-1). Our measurement is insensitive to the transformation (ϕ(s),ΔΓ(s)) ↦ (π - ϕ(s), -ΔΓ(s)).

Prospective transGEICAM study of the impact of the 21-gene Recurrence Score assay and traditional clinicopathological factors on adjuvant clinical decision making in women with estrogen receptor-positive (ER+) node-negative breast cancer

BACKGROUND

This study examined the impact of the Recurrence Score (RS) in Spanish breast cancer patients and explored the associations between clinicopathological markers and likelihood of change in treatment recommendations.

PATIENTS AND METHODS

Enrollment was offered consecutively to eligible women with estrogen receptor-positive; human epidermal growth factor receptor 2-negative, node-negative breast cancer. Oncologists recorded treatment recommendation and confidence in it before and after knowing the patient's RS.

RESULTS

Treatment recommendation changed in 32% of 107 patients enrolled: in 21% from chemohormonal (CHT) to hormonal therapy (HT) and in 11% from HT to CHT. RS was associated with the likelihood of change from HT to CHT (P < 0.001) and from CHT to HT (P < 0.001). Confidence of oncologists in treatment recommendations increased for 60% of cases. Higher tumor grade (P = 0.007) and a high proliferative index (Ki-67) (P = 0.023) were significantly associated with a greater chance of changing from HT to CHT, while positive progesterone receptor status (P = 0.002) with a greater probability of changing from CHT to HT.

CONCLUSIONS

Results from the first prospective European study are consistent with published experience and use of the RS as proposed in European clinical practice guidelines and provide evidence on how Oncotype DX and clinicopathological factors are complementary and patient selection may be improved.