Typ

Artikel in einem Journal

Gebiet

Anderes Gebiet

Autor

P. Bechtle, T. Bringmann, K. Desch, H. Dreiner, M. Hamer, C. Hensel, M. Kramer, N. Nguyen, W. Porod, X. Prudent, B. Sarrazin, M. Uhlenbrock, P. Wienemann

Titel

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

Datum

2012-04

Reportnummer

JHEP 1206 (2012) 098

Kurzfassung

We perform global fits to the parameters of the Constrained Minimal Supersymmetric 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 Bs→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(Bs→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.

Journal

doi:10.1007/JHEP06(2012)098