Implications of initial LHC searches for supersymmetry
Abstract
The CMS and ATLAS Collaborations have recently published the results of initial direct LHC searches for supersymmetry analyzing ∼35/pb of data taken at 7 TeV in the centre of mass. We incorporate these results into a frequentist analysis of the probable ranges of parameters of simple versions of the minimal supersymmetric extension of the Standard Model (MSSM), namely the constrained MSSM (CMSSM), a model with common non-universal Higgs masses (NUHM1), the very constrained MSSM (VCMSSM) and minimal supergravity (mSUGRA). We present updated predictions for the gluino mass, m_{tilde{g}}, the light-Higgs boson mass, M h , BR( B s → μ + μ -) and the spin-independent dark matter scattering cross section, σ^{SI}p. The CMS and ATLAS data make inroads into the CMSSM, NUHM1 and VCMSSM (but not mSUGRA) parameter spaces, thereby strengthening previous lower limits on sparticle masses and upper limits on σ^{SI}p in the CMSSM and VCMSSM. The favoured ranges of BR( B s → μ + μ -) in the CMSSM, VCMSSM and mSUGRA are close to the Standard Model, but considerably larger values of BR( B s → μ + μ -) are possible in the NUHM1. Applying the CMS and ATLAS constraints improves the consistency of the model predictions for M h with the LEP exclusion limits.
- Publication:
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European Physical Journal C
- Pub Date:
- May 2011
- DOI:
- 10.1140/epjc/s10052-011-1634-1
- arXiv:
- arXiv:1102.4585
- Bibcode:
- 2011EPJC...71.1634B
- Keywords:
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- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 17 pages, 7 figures