Implications of Initial LHC Searches for Supersymmetry

Buchmueller, O.; Cavanaugh, R.; Flacher, H.; Isidori, G.; Weiglein, G.; Ronga, F.; Olive, K.; Rogerson, S.; Dolan, M.J.; Colling, D.; de Roeck, A.; Heinemeyer, S.; Ellis, J.R.

doi:10.1140/epjc/s10052-011-1634-1

Article
Report number	arXiv:1102.4585 ; DESY-10-249 ; CERN-PH-TH-2010-321 ; KCL-PH-TH-2011-04 ; FERMILAB-PUB-11-907-CMS ; CERN-PH-TH-2010-321 ; KCL-PH-TH-2011-04
Title	Implications of Initial LHC Searches for Supersymmetry
Author(s)	Buchmueller, O. (Imperial Coll., London) ; Cavanaugh, R. (Fermilab ; Illinois U., Chicago) ; Colling, D. (Imperial Coll., London) ; de Roeck, A. (CERN ; Antwerp U.) ; Dolan, M.J. (Durham U., IPPP) ; Ellis, J.R. (CERN ; King's Coll. London) ; Flacher, H. (Rochester U.) ; Heinemeyer, S. (Cantabria Inst. of Phys.) ; Isidori, G. (Frascati) ; Olive, K. (Minnesota U., Theor. Phys. Inst.) ; Rogerson, S. (Imperial Coll., London) ; Ronga, F. (Zurich, ETH) ; Weiglein, G. (DESY)
Publication	2011
Imprint	23 Feb 2011
Number of pages	17
Note	Comments: 17 pages, 7 figures 17 pages, 7 figures
In:	Eur. Phys. J. C 71 (2011) 1634
DOI	10.1140/epjc/s10052-011-1634-1
Subject category	Particle Physics - Phenomenology
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_gl, the light Higgs boson mass, M_h, BR(B_s to mu mu) and the spin-independent dark matter scattering cross section, sigma_SI. 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 sigma_SI in the CMSSM and VCMSSM. The favoured ranges of BR(B_s to mu mu) in the CMSSM, VCMSSM and mSUGRA are close to the Standard Model, but considerably larger values of BR(B_s to mu mu) 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.
Copyright/License	Preprint: © 2010-2025 CERN (License: CC-BY-3.0)

$\it The $(m_0, m_{1/2})$ planes in the CMSSM (upper left), NUHM1 (top right), VCMSSM (lower left) and mSUGRA (lower right). In each panel, we show the 68 and 95\%~CL contours (red and blue, respectively) both after applying the CMS~\protect\cite{CMSsusy} and ATLAS~\protect\cite{ATLASsusy} constraints (dashed and solid lines, respectively) and beforehand (dotted lines). Also shown as open (solid) green stars are the best-fit points found after applying the CMS (ATLAS) constraints in each model (see text), and as green `snowflakes' the previous best-fit points.$ $\it The $(m_0, m_{1/2})$ planes in the CMSSM (upper left), NUHM1 (top right), VCMSSM (lower left) and mSUGRA (lower right). In each panel, we show the 68 and 95\%~CL contours (red and blue, respectively) both after applying the CMS~\protect\cite{CMSsusy} and ATLAS~\protect\cite{ATLASsusy} constraints (dashed and solid lines, respectively) and beforehand (dotted lines). Also shown as open (solid) green stars are the best-fit points found after applying the CMS (ATLAS) constraints in each model (see text), and as green `snowflakes' the previous best-fit points.$ $\it The $(m_0, m_{1/2})$ planes in the CMSSM (upper left), NUHM1 (top right), VCMSSM (lower left) and mSUGRA (lower right). In each panel, we show the 68 and 95\%~CL contours (red and blue, respectively) both after applying the CMS~\protect\cite{CMSsusy} and ATLAS~\protect\cite{ATLASsusy} constraints (dashed and solid lines, respectively) and beforehand (dotted lines). Also shown as open (solid) green stars are the best-fit points found after applying the CMS (ATLAS) constraints in each model (see text), and as green `snowflakes' the previous best-fit points.$ Show more plots

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