4.4 Article

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

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 6, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP06(2012)098

Keywords

Supersymmetry Phenomenology

Funding

  1. Helmholtz Alliance Physics at the Terascale
  2. DFG [SFB/TR9, SFB 676, BR 3954/1-1, HE 5560/1-1]
  3. European Community's Marie-Curie Research Training Network [MRTN-CT-2006-035505]
  4. Helmholtz Young Investigator Grant [VH-NG-303]
  5. Helmholtz Alliance Physics at the Terascale
  6. DFG [SFB/TR9, SFB 676, BR 3954/1-1, HE 5560/1-1]
  7. European Community's Marie-Curie Research Training Network [MRTN-CT-2006-035505]
  8. Helmholtz Young Investigator Grant [VH-NG-303]

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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 B-s -> mu mu 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)mu 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 126GeV can barely be accommodated. Values for B(B-s -> mu mu) 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.

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