The CMSSM and NUHM1 in light of 7 TeV LHC, Bs→μ+μ- and XENON100 data

O. Buchmueller, R. Cavanaugh, M. Citron, A. De Roeck, M. J. Dolan, J. R. Ellis, H. Flächer, S. Heinemeyer, G. Isidori, J. Marrouche, D. Martínez Santos, S. Nakach, K. A. Olive, S. Rogerson, F. J. Ronga, K. J. de Vries, G. Weiglein

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161 Scopus citations


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 + ET 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(Bs→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 Mh~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 (m0,m1/2) planes of the CMSSM and NUHM1. The new BR(Bs→μ+μ-) constraint has greater impacts on these CL regions, and also impacts significantly the 68 and 95 % CL regions in the (MA,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 m0,m1/2 in the CMSSM, and increase the global χ2 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 m0,m1/2, but increase the global χ2 from 28. 9 to 31. 3, thereby reducing the p-value from 15 % to 9. 1 %.

Original languageEnglish (US)
Article number2243
Pages (from-to)1-20
Number of pages20
JournalEuropean Physical Journal C
Issue number11
StatePublished - Dec 2012

Bibliographical note

Funding Information:
The work of O.B., M.C., J.E., J.M., S.N., K.A.O. and V. is supported in part by the London Centre for Terauniverse Studies (LCTS), using funding from the European Research Council via the Advanced Investigator Grant 267352. The work of S.H. is supported in part by CICYT (grant FPA 2010–22163-C02-01) and by the Spanish MICINN’s Consolider-Ingenio 2010 Program under grant MultiDark CSD2009-00064. The work of K.A.O. is supported in part by DOE grant DE-FG02-94ER-40823 at the University of Minnesota. We thank Robert Fleischer for discussions.


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