Excess Higgs production in neutralino decays

A bstract The ATLAS and CMS experiments have recently claimed discovery of a Higgs boson-like particle at ~5 σ confidence and are beginning to test the Standard Model predictions for its production and decay. In a variety of supersymmetric models, a neutralino NLSP can decay dominantly to the Higgs...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2012; no. 10
Main Authors Howe, Kiel, Saraswat, Prashant
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.10.2012
Springer Nature B.V
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Summary:A bstract The ATLAS and CMS experiments have recently claimed discovery of a Higgs boson-like particle at ~5 σ confidence and are beginning to test the Standard Model predictions for its production and decay. In a variety of supersymmetric models, a neutralino NLSP can decay dominantly to the Higgs and the LSP. In natural SUSY models, a light third generation squark decaying through this chain can lead to large excess Higgs production while evading existing BSM searches. Such models can be observed at the 8 TeV LHC in channels exploiting the rare diphoton decays of the Higgs produced in the cascade decay. Identifying a diphoton resonance in association with missing energy, a lepton, or b -tagged jets is a promising search strategy for discovery of these models, and would immediately signal new physics involving production of a Higgs boson. We also discuss the possibility that excess Higgs production in these SUSY decays can be responsible for enhancements of up to 50% over the SM prediction for the observed rate in the existing inclusive diphoton searches, a scenario which would likely by the end of the 8 TeV run be accompanied by excesses in the γγ + ℓ/MET and SUSY multi-lepton/ b searches and a potential discovery in a γγ + 2 b search.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP10(2012)065