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arXiv · 1601.01569

750 GeV Di-photon excess at CERN LHC from a dark sector assisted scalar decay

Subhaditya Bhattacharya·Sudhanwa Patra·Nirakar Sahoo·Narendra Sahu
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Abstract

We present a simple extension of the standard model (SM) to explain the 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. These vector-like leptons 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 component of the Universe. We show the relevant parameter space for correct relic density and direct detection of dark matter.

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Subhaditya Bhattacharya, Sudhanwa Patra, Nirakar Sahoo, Narendra Sahu. 2016-05-27. 750 GeV Di-photon excess at CERN LHC from a dark sector assisted scalar decay. https://doi.org/10.1088/1475-7516%2F2016%2F06%2F010

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