Constrained exceptional supersymmetric standard model with a Higgs signal near 125GeV
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2012
Authors
Athron, P.
King, S.
Miller, D.
Moretti, S.
Nevzorov, R.
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Physical Review D: Particles, Fields, Gravitation and Cosmology, 2012; 86(9):1-16
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P. Athron, S. F. King, D. J. Miller, S. Moretti, and R. Nevzorov
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Abstract
We study the parameter space of the constrained exceptional supersymmetric standard model (cE⁶SSM) consistent with a Higgs signal near 125 GeV and the LHC searches for squarks, gluinos and Z′. The cE⁶SSM parameter space, consistent with correct electroweak symmetry breaking, is represented by scans in the (m₀,M₁/₂) plane for fixed Z′ mass and tanβ, with squark, gluino and Higgs masses plotted as contours in this plane. We find that a 125 GeV Higgs mass only arises for a sufficiently large Z′ mass, mostly above current limits, and for particular regions of squark and gluino masses corresponding to multi-TeV squark masses, but with lighter gluinos typically within reach of the LHC 8 TeV or forthcoming 14 TeV runs. Successful dark matter relic abundance may be achieved over all the parameter space, assuming a binolike lightest supersymmetric particle with a nearby heavier inert Higgsino doublet and decoupled inert singlinos, resulting in conventional gluino decay signatures. A set of typical benchmark points with a Higgs near 125 GeV is provided which exemplifies these features.
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© 2012 American Physical Society