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Charge and color breaking constraints in MSSM after the Higgs discovery at LHC

Chowdhury, Debtosh and Godbole, Rohini M and Mohan, Kirtimaan A and Vempati, Sudhir K (2014) Charge and color breaking constraints in MSSM after the Higgs discovery at LHC. In: JOURNAL OF HIGH ENERGY PHYSICS (2).

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Official URL: http://dx.doi.org/10.1007/JHEP02(2014)110

Abstract

We revisit the constraints on the parameter space of the Minimal Supersymmetric Standard Model (MSSM), from charge and color breaking minima in the light of information on the Higgs from the LHC so far. We study the behavior of the scalar potential keeping two light sfermion fields along with the Higgs in the pMSSM framework and analyze the stability of the vacuum. We find that for lightest stops a parts per thousand(2) 1 TeV and small mu a parts per thousand(2) 500 GeV, the absolute stability of the potential can be attained only for . The bounds become stronger for larger values of the mu parameter. Note that this is approximately the value of Xt which maximizes the Higgs mass. Our bounds on the low scale MSSM parameters are more stringent than those reported earlier in literature. We reanalyze the stau sector as well, keeping both staus. We study the connections between the observed Higgs rates and vacuum (meta)stability. We show how a precision study of the ratio of signal strengths, (mu (gamma gamma) /mu (ZZ) ) can shed further light.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the SPRINGER, USA
Keywords: Supersymmetry Phenomenology
Department/Centre: Division of Physical & Mathematical Sciences > Centre for High Energy Physics
Depositing User: Id for Latest eprints
Date Deposited: 15 Apr 2014 06:31
Last Modified: 15 Apr 2014 06:31
URI: http://eprints.iisc.ac.in/id/eprint/48857

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