Constrained supersymmetry after two years of LHC data: a global view with Fittino

Please always quote using this URN: urn:nbn:de:bvb:20-opus-129573
  • We perform global fits to the parameters of the Constrained Minimal Super-symmetric Standard Model (CMSSM) and to a variant with non-universal Higgs masses (NUHM1). In addition to constraints from low-energy precision observables and the cosmological dark matter density, we take into account the LHC exclusions from searches in jets plus missing transverse energy signatures with about 5 fb\(^{−1}\) of integrated luminosity. We also include the most recent upper bound on the branching ratio B\(_s\)  → μμ from LHCb. Furthermore, constraints fromWe perform global fits to the parameters of the Constrained Minimal Super-symmetric Standard Model (CMSSM) and to a variant with non-universal Higgs masses (NUHM1). In addition to constraints from low-energy precision observables and the cosmological dark matter density, we take into account the LHC exclusions from searches in jets plus missing transverse energy signatures with about 5 fb\(^{−1}\) of integrated luminosity. We also include the most recent upper bound on the branching ratio B\(_s\)  → μμ from LHCb. Furthermore, constraints from and implications for direct and indirect dark matter searches are discussed. The best fit of the CMSSM prefers a light Higgs boson just above the experimentally excluded mass. We find that the description of the low-energy observables, (g − 2)\(_μ\) in particular, and the non-observation of SUSY at the LHC become more and more incompatible within the CMSSM. A potential SM-like Higgs boson with mass around 126 GeV can barely be accommodated. Values for B(B\(_s\)→μμ) just around the Standard Model prediction are naturally expected in the best fit region. The most-preferred region is not yet affected by limits on direct WIMP searches, but the next generation of experiments will probe this region. Finally, we discuss implications from fine-tuning for the best fit regions.show moreshow less

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Author: Philip Bechtle, Torsten Bringmann, Klaus Desch, Herbi Dreiner, Matthias Hamer, Carsten Hensel, Michael Krämer, Nelly Nguyen, Werner Porod, Xavier Prudent, Björn Sarrazin, Mathias Uhlenbrock, Peter Wienemann
URN:urn:nbn:de:bvb:20-opus-129573
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Institut für Theoretische Physik und Astrophysik
Language:English
Parent Title (English):Journal of High Energy Physics
Year of Completion:2012
Volume:06
Issue:098
Source:Journal of High Energy Physics 06 (2012) 098. DOI:10.1007/JHEP06(2012)098
DOI:https://doi.org/10.1007/JHEP06(2012)098
ArXiv Id:http://arxiv.org/abs/1204.4199
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 539 Moderne Physik
Tag:supersymmetry phenomenology
Release Date:2016/11/24
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung