Title
The CMSSM and NUHM1 in light of 7 TeV LHC, <tex>$B_{s}\rightarrow\mu^{+}\mu^{-}$</tex> and XENON100 dataThe CMSSM and NUHM1 in light of 7 TeV LHC, <tex>$B_{s}\rightarrow\mu^{+}\mu^{-}$</tex> and XENON100 data
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Elementary Particle Physics
Publication type
article
Publication
Berlin,
Subject
Physics
Source (journal)
European physical journal : C : particles and fields. - Berlin
Volume/pages
72(2012):11, p. 1-20
ISSN
1434-6044
Article Reference
2243
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
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 + E-T signals using similar to 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 -> mu(+)mu(-)) 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 similar to 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 ATLAS(5/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 -> mu(+)mu(-)) constraint has greater impacts on these CL regions, and also impacts significantly the 68 and 95 % CL regions in the (M-A, tan beta) planes of both models, reducing the best-fit values of tan beta. 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 chi(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 chi(2) from 28.9 to 31.3, thereby reducing the p-value from 15 % to 9.1 %.
E-info
https://repository.uantwerpen.be/docman/iruaauth/ccb748/e925070.pdf
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