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Interpreting 750 GeV Diphoton Excess in Plain NMSSM

By Marcin Badziak, Marek Olechowski, Stefan Pokorski and Kazuki Sakurai

Abstract

NMSSM has enough ingredients to explain the diphoton excess at 750 GeV: singlet-like (pseudo) scalar ($a$) $s$ and higgsinos as heavy vector-like fermions. We consider the production of the 750 GeV singlet-like pseudo scalar a from a decay of the doublet-like pseudo scalar $A$, and the subsequent decay of $a$ into two photons via higgsino loop. We demonstrate that this cascade decay of the NMSSM Higgs bosons can explain the diphoton excess in the 13 TeV data consistently with the absence of a significant excess in the 8 TeV data.Comment: 20 pages, 6 figures, typos have been corrected, a study about the radiative correction to the Higgs boson mass has been adde

Topics: High Energy Physics - Phenomenology, High Energy Physics - Experiment
Publisher: 'Elsevier BV'
Year: 2016
DOI identifier: 10.1016/j.physletb.2016.06.057
OAI identifier: oai:arXiv.org:1603.02203

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