750 GeV Di-photon excess at CERN LHC from a dark sector assisted scalar decay
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 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.
Cite
@article{arxiv.1601.01569,
title = {750 GeV Di-photon excess at CERN LHC from a dark sector assisted scalar decay},
author = {Subhaditya Bhattacharya and Sudhanwa Patra and Nirakar Sahoo and Narendra Sahu},
journal= {arXiv preprint arXiv:1601.01569},
year = {2016}
}
Comments
20 pages, 11 figures, accepted for publication in JCAP