The CMSSM and NUHM1 in light of 7 TeV LHC, B-s -> mu(+)mu(-) and XENON100 data
Abstract
We make a frequentist analysis of the parameter space of the CMSSM and NUHM1, using a Markov Chain Monte Carlo (MCMC) with 95 (221) million points to sample the CMSSM (NUHM1) parameter spaces. Our analysis includes the ATLAS search for supersymmetric jets + Open image in new window signals using ∼5/fb of LHC data at 7 TeV, which we apply using PYTHIA and a Delphes implementation that we validate in the relevant parameter regions of the CMSSM and NUHM1. Our analysis also includes the constraint imposed by searches for BR(B s →μ + μ −) by LHCb, CMS, ATLAS and CDF, and the limit on spin-independent dark matter scattering from 225 live days of XENON100 data. We assume M h ∼125 GeV, and use a full set of electroweak precision and other flavour-physics observables, as well as the cold dark matter density constraint. The ATLAS5/fb constraint has relatively limited effects on the 68 and 95 % CL regions in the (m 0,m 1/2) planes of the CMSSM and NUHM1. The new BR(B s →μ + μ −) constraint has greater impacts on these CL regions, and also impacts significantly the 68 and 95 % CL regions in the (M A ,tanβ) planes of both models, reducing the best-fit values of tanβ. The recent XENON100 data eliminate the focus-point region in the CMSSM and affect the 68 and 95 % CL regions in the NUHM1. In combination, these new constraints reduce the best-fit values of m 0,m 1/2 in the CMSSM, and increase the global χ 2 from 31.0 to 32.8, reducing the p-value from 12 % to 8.5 %. In the case of the NUHM1, they have little effect on the best-fit values of m 0,m 1/2, but increase the global χ 2 from 28.9 to 31.3, thereby reducing the p-value from 15 % to 9.1 %. Show more
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https://doi.org/10.3929/ethz-b-000063838Publication status
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Journal / series
The European Physical Journal CVolume
Pages / Article No.
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SpringerOrganisational unit
03593 - Dissertori, Günther / Dissertori, Günther
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