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Title: 750 GeV diphoton 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 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{sub 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.

Authors:
 [1];  [2]; ;  [3]
  1. Department of Physics, Indian Institute of Technology Guwahati,North Guwahati, Assam 781039 (India)
  2. Center of Excellence in Theoretical and Mathematical Sciences,Siksha ‘O’ Anusandhan University, Bhubaneswar 751030 (India)
  3. Department of Physics, Indian Institute of Technology Hyderabad,Kandi, Sangareddy, Medak 502 285, Telengana (India)
Publication Date:
Sponsoring Org.:
SCOAP3, CERN, Geneva (Switzerland)
OSTI Identifier:
22572089
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2016; Journal Issue: 06; Other Information: PUBLISHER-ID: JCAP06(2016)010; OAI: oai:repo.scoap3.org:15893; cc-by Article funded by SCOAP3. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATLAS DETECTOR; CERN LHC; CHARGED PARTICLES; CMS DETECTOR; COSMOLOGY; GEV RANGE 100-1000; HIGGS BOSONS; HIGGS MODEL; NONLUMINOUS MATTER; PARTICLE DECAY; PHOTONS; RELICT RADIATION; STANDARD MODEL; UNIVERSE

Citation Formats

Bhattacharya, Subhaditya, Patra, Sudhanwa, Sahoo, Nirakar, and Sahu, Narendra. 750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay. United States: N. p., 2016. Web. doi:10.1088/1475-7516/2016/06/010.
Bhattacharya, Subhaditya, Patra, Sudhanwa, Sahoo, Nirakar, & Sahu, Narendra. 750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay. United States. doi:10.1088/1475-7516/2016/06/010.
Bhattacharya, Subhaditya, Patra, Sudhanwa, Sahoo, Nirakar, and Sahu, Narendra. Mon . "750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay". United States. doi:10.1088/1475-7516/2016/06/010.
@article{osti_22572089,
title = {750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay},
author = {Bhattacharya, Subhaditya and Patra, Sudhanwa and Sahoo, Nirakar and Sahu, Narendra},
abstractNote = {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{sub 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.},
doi = {10.1088/1475-7516/2016/06/010},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 06,
volume = 2016,
place = {United States},
year = {Mon Jun 06 00:00:00 EDT 2016},
month = {Mon Jun 06 00:00:00 EDT 2016}
}