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arXiv · 1301.7584

LHC constraints on M_1/2 and m_0 in the semi-constrained NMSSM

Debottam Das·Ulrich Ellwanger·Ana M. Teixeira
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Abstract

Constraints from searches for squarks and gluinos at the LHC at sqrt{s}=8 TeV are applied to the parameter space of the NMSSM with universal squark/slepton and gaugino masses at the GUT scale, but allowing for non-universal soft Higgs mass parameters (the sNMSSM). We confine ourselves to regions of the parameter space compatible with a 125 GeV Higgs boson with diphoton signal rates at least as large as the Standard Model ones, and a dark matter candidate compatible with WMAP and XENON100 constraints. Following the simulation of numerous points in the m_0-M_{1/2} plane, we compare the constraints on the sNMSSM from 3-5 jets + missing E_T channels as well as from multijet + missing E_T channels with the corresponding cMSSM constraints. Due to the longer squark decay cascades, lower bounds on M_{1/2} are alleviated by up to 50 GeV. For heavy squarks at large m_0, the dominant constraints originate from multijet + missing E_T channels due to gluino decays via stop pairs.

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Debottam Das, Ulrich Ellwanger, Ana M. Teixeira. 2013-06-24. LHC constraints on M_1/2 and m_0 in the semi-constrained NMSSM. https://doi.org/10.1007/jhep04(2013)117

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