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Yamamoto TO, Agnello M, Akazawa Y, Amano N, Aoki K, Botta E, Chiga N, Ekawa H, Evtoukhovitch P, Feliciello A, Fujita M, Gogami T, Hasegawa S, Hayakawa SH, Hayakawa T, Honda R, Hosomi K, Hwang SH, Ichige N, Ichikawa Y, Ikeda M, Imai K, Ishimoto S, Kanatsuki S, Kim MH, Kim SH, Kinbara S, Koike T, Lee JY, Marcello S, Miwa K, Moon T, Nagae T, Nagao S, Nakada Y, Nakagawa M, Ogura Y, Sakaguchi A, Sako H, Sasaki Y, Sato S, Shiozaki T, Shirotori K, Sugimura H, Suto S, Suzuki S, Takahashi T, Tamura H, Tanabe K, Tanida K, Tsamalaidze Z, Ukai M, Yamamoto Y, Yang SB. Observation of Spin-Dependent Charge Symmetry Breaking in ΛN Interaction: Gamma-Ray Spectroscopy of _{Λ}^{4}He. PHYSICAL REVIEW LETTERS 2015; 115:222501. [PMID: 26650298 DOI: 10.1103/physrevlett.115.222501] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Indexed: 06/05/2023]
Abstract
The energy spacing between the spin-doublet bound state of _{Λ}^{4}He(1^{+},0^{+}) was determined to be 1406±2±2 keV, by measuring γ rays for the 1^{+}→0^{+} transition with a high efficiency germanium detector array in coincidence with the ^{4}He(K^{-},π^{-})_{Λ}^{4}He reaction at J-PARC. In comparison to the corresponding energy spacing in the mirror hypernucleus _{Λ}^{4}H, the present result clearly indicates the existence of charge symmetry breaking (CSB) in ΛN interaction. By combining the energy spacings with the known ground-state binding energies, it is also found that the CSB effect is large in the 0^{+} ground state but is vanishingly small in the 1^{+} excited state, demonstrating that the ΛN CSB interaction has spin dependence.
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Konno Y, Takahashi I, Narita A, Takeda O, Koizumi H, Tamura M, Kikuchi W, Komatsu A, Tamura H, Tsuchida S, Noguchi A, Takahashi T. Elevation of Serum Acid Sphingomyelinase Activity in Acute Kawasaki Disease. TOHOKU J EXP MED 2015; 237:133-40. [PMID: 26447086 DOI: 10.1620/tjem.237.133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Kawasaki disease (KD) is an acute systemic vasculitis that affects both small and medium-sized vessels including the coronary arteries in infants and children. Acid sphingomyelinase (ASM) is a lysosomal glycoprotein that hydrolyzes sphingomyelin to ceramide, a lipid, that functions as a second messenger in the regulation of cell functions. ASM activation has been implicated in numerous cellular stress responses and is associated with cellular ASM secretion, either through alternative trafficking of the ASM precursor protein or by means of an unidentified mechanism. Elevation of serum ASM activity has been described in several human diseases, suggesting that patients with diseases involving vascular endothelial cells may exhibit a preferential elevation of serum ASM activity. As acute KD is characterized by systemic vasculitis that could affect vascular endothelial cells, the elevation of serum ASM activity should be considered in these patients. In the present study, serum ASM activity in the sera of 15 patients with acute KD was determined both before and after treatment with infusion of high-dose intravenous immunoglobulin (IVIG), a first-line treatment for acute KD. Serum ASM activity before IVIG was significantly elevated in KD patients when compared to the control group (3.85 ± 1.46 nmol/0.1 ml/6 h vs. 1.15 ± 0.10 nmol/0.1 ml/6 h, p < 0.001), suggesting that ASM activation may be involved in the pathophysiology of this condition. Serum ASM activity before IVIG was significantly correlated with levels of C-reactive protein (p < 0.05). These results suggest the involvement of sphingolipid metabolism in the pathophysiology of KD.
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Maekawa R, Sinagawa M, Okada M, Asada H, Taketani T, Yamagata Y, Tamura H, Sugino N, Kubo M. A woman case of familial Mediterranean fever accompanied with periodic fever during menstruation. J Reprod Immunol 2014. [DOI: 10.1016/j.jri.2014.09.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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79
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Hata M, Oishi A, Tsujikawa A, Yamashiro K, Miyake M, Ooto S, Tamura H, Nakanishi H, Takahashi A, Yoshikawa M, Yoshimura N. Efficacy of Intravitreal Injection of Aflibercept in Neovascular Age-Related Macular Degeneration With or Without Choroidal Vascular Hyperpermeability. Invest Ophthalmol Vis Sci 2014; 55:7874-80. [DOI: 10.1167/iovs.14-14610] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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80
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Sagara A, Tamura H, Tanaka T, Yanagi N, Miyazawa J, Goto T, Sakamoto R, Yagi J, Watanabe T, Takayama S. Helical reactor design FFHR-d1 and c1 for steady-state DEMO. FUSION ENGINEERING AND DESIGN 2014. [DOI: 10.1016/j.fusengdes.2014.02.076] [Citation(s) in RCA: 98] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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81
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Koike T, Suzuki Y, Genyu S, Kobayashi I, Komori H, Otsu H, Sakuma H, Sakuma K, Sarausad EM, Shimada K, Shinozuka T, Tamura H, Tsukada K, Ukai M, Yamamoto TO. Comprehensive data on ionising radiation from Fukushima Daiichi nuclear power plant in the town of Miharu, Fukushima Prefecture: The Misho Project. JOURNAL OF RADIOLOGICAL PROTECTION : OFFICIAL JOURNAL OF THE SOCIETY FOR RADIOLOGICAL PROTECTION 2014; 34:675-698. [PMID: 25125455 DOI: 10.1088/0952-4746/34/3/675] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Data related to radioactivity released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident on 15 March 2011 gathered by residents of Miharu, Fukushima Prefecture, and by Tohoku University are presented. These data sets consist of (1) the earliest radiation monitoring by a Geiger counter in the town, (2) ratios of radioactivity between (132)Te and (137)Cs for a wide area between Fukushima and Tokyo, (3) radiation measurement of soil samples collected from 18 school grounds, and (4) external radiation exposure of 1400 students using OSL badges. By combining and analysing these various data sets, a curve for the cumulative total external exposure as a function of time, with 16 : 00 h on 15 March 2011 being time zero, is obtained. The average cumulative external dosage is estimated to be 10 mSv (σ = 4.2 mSv) over 10 years. In addition, the initiative that the residents of Miharu took in response to the FDNPP accident, which became known as The Misho Project (MP), is documented; in particular, the time at which the municipality instructed the immediate ingestion of iodine tablets by those under the age of 40, 13 : 00 h on 15 March 2011, is assessed.
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Tamura H, Mitose K, Suzuki Y. Fatigue Properties of Ti-Ni Shape Memory Alloy Springs. ACTA ACUST UNITED AC 2014. [DOI: 10.1051/jp4/199558617] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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83
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Sugimura H, Agnello M, Ahn J, Ajimura S, Akazawa Y, Amano N, Aoki K, Bhang H, Endo M, Evtoukhovitch P, Feliciello A, Fujioka H, Fukuda T, Hasegawa S, Hayakawa S, Honda R, Hosomi K, Hwang S, Ichikawa Y, Igarashi Y, Imai K, Ishibashi N, Iwasaki R, Joo C, Kiuchi R, Lee J, Lee J, Matsuda K, Matsumoto Y, Matsuoka K, Miwa K, Mizoi Y, Moritsu M, Nagae T, Nagamiya S, Nakagawa M, Naruki M, Noumi H, Ota R, Roy B, Saha P, Sakaguchi A, Sako H, Samanta C, Samoilov V, Sasaki Y, Sato S, Sekimoto M, Shimizu Y, Shiozaki T, Shirotori K, Soyama T, Takahashi T, Takahashi T, Tamura H, Tanabe K, Tanaka T, Tanida K, Tokiyasu A, Tsamalaidze Z, Ukai M, Yamamoto T, Yamamoto Y, Yang S, Yoshida K. Study onΛ6H hypernucleus by the (π−,K+) reaction at J-PARC. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146609017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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84
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Tamura H, Goto T, Yanagi N, Tanaka T, Masuzaki S, Miyazawa J, Sagara A. Radial-build design and support system for the helical DEMO reactor FFHR-d1. FUSION ENGINEERING AND DESIGN 2013. [DOI: 10.1016/j.fusengdes.2013.02.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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85
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Itakura M, Terashima Y, Shingyoji M, Yokoi S, Ohira M, Kageyama H, Matui Y, Yoshida Y, Ashinuma H, Moriya Y, Tamura H, Harigaya K, Matushima K, Iizasa T, Nakagawara A, Kimura H. High CC chemokine receptor 7 expression improves postoperative prognosis of lung adenocarcinoma patients. Br J Cancer 2013; 109:1100-8. [PMID: 23922113 PMCID: PMC3778295 DOI: 10.1038/bjc.2013.440] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2013] [Revised: 07/10/2013] [Accepted: 07/11/2013] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Chemokines and chemokine receptors not only have significant roles in cancer metastasis and tumorigenesis but also act as antitumour agents. The interaction between the Crk-like adaptor protein (CrkL), which is encoded by the CRKL gene, and non-receptor tyrosine kinase c-ABL is reported to transform many cells into malignant cells. We examined the effects of CC chemokine receptor 7 (CCR7), CCR7 ligands and CrkL and c-ABL in lung adenocarcinoma. METHODS One hundred and twenty patients with lung adenocarcinoma were included in this historical cohort analysis. We examined CCR7 and CCR7 ligands and CrkL and c-ABL mRNA expressions in surgically resected lung adenocarcinoma specimens and evaluated their contribution to prognosis, and the relationship with epidermal growth factor receptor (EGFR) and TP53 mutations. RESULTS High CCR7 mRNA expressions indicated better prognoses than those of the groups with low CCR7 mRNA expressions (P=0.007, HR=2.00, 95% CI of ratio: 1.22 -3.31). In lung adenocarcinoma, CrkL and c-ABL mRNAs were related to CCR7 mRNA expression (P<0.0001). CrkL and c-ABL mRNA expressions were influenced by EGFR mutations. A high expression of CCL19 was a good prognostic factor of lung adenocarcinoma. CONCLUSION We propose that CCR7 and CCL19 are clinically good prognostic factors and that CCR7 is strongly related to CrkL and c-ABL kinase mRNA expression in lung adenocarcinoma.
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Honda Y, Watanabe T, Tamura H, Nishiyama S, Takahashi H, Arimoto T, Shishido T, Miyashita T, Miyamoto T, Kubota I. Elevated Cardio-Ankle Vascular Index (CAVI) predicts severe sleep disordered breathing in non-overweight patients with chronic heart failure. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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87
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Sasaki S, Tamura H, Watanabe T, Nishiyama S, Wanezaki M, Ishino M, Sato C, Kubota I. Decreased left atrial peak systolic strain evaluated by two-dimensional speckle tracking reflects left atrial appendage dysfunction in sinus rhythm patients with acute ischemic stroke. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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88
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Miyauchi K, Tamura H, Okazaki S, Daida H. Efficacy of chronic high-dose statin therapy in procedural myocardial injury and long-term outcomes in patients undergoing rotablational atherectomy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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89
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Otaki Y, Watanabe T, Takahashi H, Tamura H, Nishiyama S, Arimoto T, Miyashita T, Shishido T, Miyamoto T, Kubota I. Plasma thioredoxin-1 level is associated with renal tubular damage and predicts poor prognosis in patients with chronic heart failure. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p1524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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90
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Nishiyama S, Watanabe T, Tamura H, Ishino M, Sasaki S, Wanezaki M, Sato C, Shishido T, Kubota I. Metabolic syndrome deteriorates aortic arch plaque in atherothrombotic stroke. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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91
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Wanezaki M, Tamura H, Watanabe T, Sato C, Sasaki S, Ishino M, Nishiyama S, Kubota I. Female patients with non-valvular atrial fibrillation are susceptible to cardioembolic stroke because of their left atrial enlargement. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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92
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Schuring A, Kiesel L, Gotte M, Cao MZ, Chan RWS, Yeung WSB, Yamagata Y, Asada H, Tamura H, Sugino N, Jin X, Jiang Y, Shen X, Liu H, Zhu L, Shan H, Hu Y, Sun H, Yan G, Tapia-Pizarro A, Archiles S, Argandona F, Devoto L, Miyazaki K, Maruyama T, Masuda H, Oda H, Hida N, Uchida H, Yoshimura Y, Jiang Y, Shen X, Liu H, Zhen X, Sun H, Hu Y, Yan G. Session 59: Endometrium. Hum Reprod 2013. [DOI: 10.1093/humrep/det192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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93
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Ishibashi M, Tamura H, Ogata K. P-055 Clinical significance of the interleukin-2 receptor alpha-chain expressed by blasts in myelodysplastic syndromes. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70104-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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94
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Takihata M, Nakamura A, Tajima K, Inazumi T, Komatsu Y, Tamura H, Yamazaki S, Kondo Y, Yamada M, Kimura M, Terauchi Y. Comparative study of sitagliptin with pioglitazone in Japanese type 2 diabetic patients: the COMPASS randomized controlled trial. Diabetes Obes Metab 2013; 15:455-62. [PMID: 23279373 DOI: 10.1111/dom.12055] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/12/2012] [Accepted: 12/15/2012] [Indexed: 11/30/2022]
Abstract
AIMS To compare the efficacy and safety of these two agents and the impact on surrogate markers related to diabetic complications in Japanese type 2 diabetic patients. METHODS In a multicenter, open-label trial, 130 patients whose diabetes had been inadequately controlled (HbA1c, 6.9-9.5%) with metformin and/or sulphonylurea were randomly assigned to a sitagliptin group (50 mg/day) or a pioglitazone group (15 mg/day) and were followed up for 24 weeks. At 16 weeks, if the patient's HbA1c level was ≥6.5%, the dose of sitagliptin or pioglitazone was increased up to 100 or 30 mg/day, respectively. Main outcome measure was the difference in the mean changes in the HbA1c level from baseline at 24 weeks between these two groups. RESULTS Of the 130 patients who were enrolled, 115 subjects (sitagliptin group: 58 patients, pioglitazone group: 57 patients) completed this trial. At 0 weeks, the mean HbA1c level was 7.47 ± 0.66% in the sitagliptin group and 7.40 ± 0.61% in the pioglitazone group. At 24 weeks, the mean changes in the HbA1c level from baseline were -0.86 ± 0.63% versus -0.58 ± 0.68% (p = 0.024). Hypoglycaemia (2 patients, 3.4% vs. 2 patients, 3.5%), gastrointestinal symptoms (3 patients, 5.2% vs. 1 patient, 1.8%) and pretibial oedema (0 patients, 0% vs. 39 patients, 68.4%, p < 0.001) were observed for 24 weeks. CONCLUSIONS Sitagliptin was not only more tolerable, but also more effective than pioglitazone in Japanese type 2 diabetic patients who had been treated with metformin and/or sulphonylurea.
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Okuyama N, Tamura H, Kamei N, Ishibashi M, Hamada Y, Kondo A, Moriya K, Ogata K. P-020 CD7 expression on MDS blasts is associated with apoptosis resistance with decreased levels of the apoptosis-related protein Bad. Leuk Res 2013. [DOI: 10.1016/s0145-2126(13)70069-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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96
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Adachi H, Takahashi I, Higashimoto K, Tsuchida S, Noguchi A, Tamura H, Arai H, Ito T, Masue M, Nishibori H, Takahashi T, Soejima H. Congenital hyperinsulinism in an infant with paternal uniparental disomy on chromosome 11p15: few clinical features suggestive of Beckwith-Wiedemann syndrome. Endocr J 2013. [PMID: 23197114 DOI: 10.1507/endocrj.ej12-0242] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Beckwith-Wiedemann syndrome (BWS) is the most common congenital overgrowth syndrome involving tumor predisposition. BWS is caused by various epigenetic or genetic alterations that disrupt the imprinted genes on chromosome 11p15.5 and the clinical findings of BWS are highly variable. Hyperinsulinemic hypoglycemia is reported in about half of all babies with BWS. We identified an infant with diazoxide-unresponsive congenital hyperinsulinism (HI) without any apparent clinical features suggestive of BWS, but diagnosed BWS by molecular testing. The patient developed severe hyperinsulinemic hypoglycemia within a few hours after birth, with macrosomia and mild hydronephrosis. We excluded mutations in the K(ATP) channel genes on chromosome 11p15.1, but found a rare homozygous single nucleotide polymorphism (SNP) of ABCC8. Parental SNP pattern suggested paternal uniparetal disomy in this region. By microsatellite marker analysis on chromosome 11p15, we could diagnose BWS due to the mosaic of paternal uniparental disomy. Our case suggests that some HI of unknown genetic etiology could involve undiagnosed BWS with no apparent clinical features, which might be diagnosed only by molecular testing.
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Smitha KT, Anitha A, Furuike T, Tamura H, Nair SV, Jayakumar R. In vitro evaluation of paclitaxel loaded amorphous chitin nanoparticles for colon cancer drug delivery. Colloids Surf B Biointerfaces 2012; 104:245-53. [PMID: 23337120 DOI: 10.1016/j.colsurfb.2012.11.031] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Revised: 11/03/2012] [Accepted: 11/18/2012] [Indexed: 12/13/2022]
Abstract
Chitin and its derivatives have been widely used in drug delivery applications due to its biocompatible, biodegradable and non-toxic nature. In this study, we have developed amorphous chitin nanoparticles (150±50 nm) and evaluated its potential as a drug delivery system. Paclitaxel (PTX), a major chemotherapeutic agent was loaded into amorphous chitin nanoparticles (AC NPs) through ionic cross-linking reaction using TPP. The prepared PTX loaded AC NPs had an average diameter of 200±50 nm. Physico-chemical characterization of the prepared nanoparticles was carried out. These nanoparticles were proven to be hemocompatible and in vitro drug release studies showed a sustained release of PTX. Cellular internalization of the NPs was confirmed by fluorescent microscopy as well as by flow cytometry. Anticancer activity studies proved the toxicity of PTX-AC NPs toward colon cancer cells. These preliminary results indicate the potential of PTX-AC NPs in colon cancer drug delivery.
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Shirotori K, Takahashi TN, Adachi S, Agnello M, Ajimura S, Aoki K, Bhang HC, Bassalleck B, Botta E, Bufalino S, Chiga N, Evtoukhovitch P, Feliciello A, Fujioka H, Hiruma F, Honda R, Hosomi K, Ichikawa Y, Ieiri M, Igarashi Y, Imai K, Ishibashi N, Ishimoto S, Itahashi K, Iwasaki R, Joo CW, Kim MJ, Kim SJ, Kiuchi R, Koike T, Komatsu Y, Kulikov VV, Marcello S, Masumoto S, Matsuoka K, Miwa K, Moritsu M, Nagae T, Naruki M, Niiyama M, Noumi H, Ozawa K, Saito N, Sakaguchi A, Sako H, Samoilov V, Sato M, Sato S, Sato Y, Sawada S, Sekimoto M, Sugimura H, Suzuki S, Takahashi H, Takahashi T, Tamura H, Tanaka T, Tanida K, Tokiyasu AO, Tomida N, Tsamalaidze Z, Ukai M, Yagi K, Yamamoto TO, Yang SB, Yonemoto Y, Yoon CJ, Yoshida K. Search for the Θ+ pentaquark via the π(-)p→K(-)X reaction at 1.92 GeV/c. PHYSICAL REVIEW LETTERS 2012; 109:132002. [PMID: 23030084 DOI: 10.1103/physrevlett.109.132002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Indexed: 06/01/2023]
Abstract
The Θ(+) pentaquark baryon was searched for via the π(-)p→K(-)X reaction with a missing mass resolution of 1.4 MeV/c(2) (FWHM) at the Japan Proton Accelerator Research Complex (J-PARC). π(-) meson beams were incident on the liquid hydrogen target with a beam momentum of 1.92 GeV/c. No peak structure corresponding to the Θ(+) mass was observed. The upper limit of the production cross section averaged over the scattering angle of 2° to 15° in the laboratory frame is obtained to be 0.26 μb/sr in the mass region of 1.51-1.55 GeV/c(2). The upper limit of the Θ(+) decay width is obtained to be 0.72 and 3.1 MeV for J(Θ)(P)=1/2(+) and J(Θ)(P)=1/2(-), respectively, using the effective Lagrangian approach.
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Sagara A, Goto T, Miyazawa J, Yanagi N, Tanaka T, Tamura H, Sakamoto R, Tanaka M, Tsumori K, Mitarai O, Imagawa S, Muroga T. Design activities on helical DEMO reactor FFHR-d1. FUSION ENGINEERING AND DESIGN 2012. [DOI: 10.1016/j.fusengdes.2012.01.030] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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100
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Tanaka T, Sagara A, Goto T, Yanagi N, Tamura H, Hirooka Y, Miyazawa J, Muroga T. Design studies on three-dimensional issues for liquid blanket systems in helical reactor FFHR. FUSION ENGINEERING AND DESIGN 2012. [DOI: 10.1016/j.fusengdes.2012.01.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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