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arXiv · 1410.6288

Non-Standard Higgs Decays in U(1) Extensions of the MSSM

P. Athron·M. Muhlleitner·R. Nevzorov·A. G. Williams
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Abstract

In U(1) extensions of the Minimal Supersymmetric extension of the Standard Model there is a simple mechanism that leads to a heavy Z' boson with a mass which is substantially larger than the supersymmetry breaking scale. This mechanism may also result in a pseudoscalar state that is light enough for decays of the 125 GeV Standard Model-like Higgs boson into a pair of such pseudoscalars to be kinematically allowed. We study these decays within E6 inspired supersymmetric models with an exact custodial symmetry that forbids tree-level flavor-changing transitions and the most dangerous baryon and lepton number violating operators. We argue that the branching ratio of the lightest Higgs boson decays into a pair of the light pseudoscalar states may not be negligibly small.

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P. Athron, M. Muhlleitner, R. Nevzorov, A. G. Williams. 2014-10-23. Non-Standard Higgs Decays in U(1) Extensions of the MSSM. https://doi.org/10.1007/jhep01(2015)153

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