750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay

Bhattacharya, S and Patra, S and Sahoo, N and Sahu, N (2016) 750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay. Journal of Cosmology and Astroparticle Physics (5). 010. ISSN 1475-7516

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We present a simple extension of the Standard Model (SM) to explain the recent diphoton excess, reported by CMS and ATLAS at CERN LHC. The SM is extended by a dark sector including a vector-like lepton doublet and a singlet of zero electromagnetic charge, which are odd under a Z(2) symmetry. The charged particle of the vector-like lepton doublet assist the additional scalar, different from SM Higgs, to decay to di-photons of invariant mass around 750 GeV and thus explaining the excess observed at LHC. The admixture of neutral component of the vector-like lepton doublet and singlet constitute the dark matter of the Universe. We show the relevant parameter space for correct relic density and direct detection of dark matter.

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IITH Creators:
IITH CreatorsORCiD
Item Type: Article
Uncontrolled Keywords: dark matter theory; neutrino properties; particle physics - cosmology connection
Subjects: Physics
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 26 Jul 2016 05:02
Last Modified: 16 Aug 2017 09:05
URI: http://raiith.iith.ac.in/id/eprint/2582
Publisher URL: https://doi.org/10.1018/1475-7516/2016/06/010
OA policy: http://www.sherpa.ac.uk/romeo/issn/1475-7516/
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