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Luo MX, Wang K, Xu T, Zhang L, Zhu G. Squarkonium, diquarkonium, and octetonium at the LHC and their diphoton decays. Int J Clin Exp Med 2016. [DOI: 10.1103/physrevd.93.055042] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Beenakker W, Borschensky C, Krämer M, Kulesza A, Laenen E, Marzani S, Rojo J. NLO+NLL squark and gluino production cross sections with threshold-improved parton distributions. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2016; 76:53. [PMID: 26900342 PMCID: PMC4750428 DOI: 10.1140/epjc/s10052-016-3892-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 01/04/2016] [Indexed: 06/02/2023]
Abstract
We present updated predictions for the cross sections for pair production of squarks and gluinos at the LHC Run II. First of all, we update the calculations based on NLO+NLL partonic cross sections by using the NNPDF3.0NLO global analysis. This study includes a full characterization of theoretical uncertainties from higher orders, PDFs and the strong coupling. Then we explore the implications for this calculation of the recent NNPDF3.0 PDFs with NLO+NLL threshold resummation. We find that the shift in the results induced by the threshold-improved PDFs is within the total theory uncertainty band of the calculation based on NLO PDFs. However, we also observe that the central values of the NLO+NLL cross sections are modified both in a qualitative and a quantitative way, illustrating the relevance and impact of using threshold-improved PDFs together with resummed partonic cross sections. The updated NLO+NLL cross sections based on NNPDF3.0NLO are publicly available in the NLL-fast format, and should be an important ingredient for the interpretation of the searches for supersymmetric particles at Run II.
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Affiliation(s)
- Wim Beenakker
- Theoretical High Energy Physics, IMAPP, Faculty of Science, Radboud University Nijmegen, Mailbox 79, P.O. Box 9010, 6500 GL Nijmegen, The Netherlands
- Institute of Physics, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Michael Krämer
- Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, 52056 Aachen, Germany
| | - Anna Kulesza
- Institute for Theoretical Physics, WWU Münster, 48149 Münster, Germany
| | - Eric Laenen
- ITFA, University of Amsterdam, Science Park 904, 1018 XE Amsterdam, The Netherlands
- ITF, Utrecht University, Leuvenlaan 4, 3584 CE Utrecht, The Netherlands
- Nikhef Theory Group, Science Park 105, 1098 XG Amsterdam, The Netherlands
| | - Simone Marzani
- Department of Physics, University at Buffalo, The State University of New York, Buffalo, NY 14260-1500 USA
| | - Juan Rojo
- Rudolf Peierls Centre for Theoretical Physics, University of Oxford, 1 Keble Road, Oxford, OX1 3NP UK
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Borschensky C, Krämer M, Kulesza A, Mangano M, Padhi S, Plehn T, Portell X. Squark and gluino production cross sections in [Formula: see text] collisions at [Formula: see text] and [Formula: see text] TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS 2014; 74:3174. [PMID: 25983637 PMCID: PMC4423871 DOI: 10.1140/epjc/s10052-014-3174-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 11/07/2014] [Indexed: 05/23/2023]
Abstract
We present state-of-the-art cross section predictions for the production of supersymmetric squarks and gluinos at the upcoming LHC run with a centre-of-mass energy of [Formula: see text] and [Formula: see text] TeV, and at potential future [Formula: see text] colliders operating at [Formula: see text] and [Formula: see text] TeV. The results are based on calculations which include the resummation of soft-gluon emission at next-to-leading logarithmic accuracy, matched to next-to-leading order supersymmetric QCD corrections. Furthermore, we provide an estimate of the theoretical uncertainty due to the variation of the renormalisation and factorisation scales and the parton distribution functions.
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Affiliation(s)
- Christoph Borschensky
- Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - Michael Krämer
- Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen University, 52056 Aachen, Germany
| | - Anna Kulesza
- Institut für Theoretische Physik, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | | | | | - Tilman Plehn
- Institut für Theoretische Physik, Universität Heidelberg, Heidelberg, Germany
| | - Xavier Portell
- European Organization for Nuclear Research, CERN, Meyrin, Switzerland
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Kumar N, Martin SP. LHC search for di-Higgs decays of stoponium and other scalars in events with two photons and two bottom jets. Int J Clin Exp Med 2014. [DOI: 10.1103/physrevd.90.055007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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