750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay
Journal Article
·
· Journal of Cosmology and Astroparticle Physics
- Department of Physics, Indian Institute of Technology Guwahati,North Guwahati, Assam 781039 (India)
- Center of Excellence in Theoretical and Mathematical Sciences,Siksha ‘O’ Anusandhan University, Bhubaneswar 751030 (India)
- Department of Physics, Indian Institute of Technology Hyderabad,Kandi, Sangareddy, Medak 502 285, Telengana (India)
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.
- Sponsoring Organization:
- SCOAP3, CERN, Geneva (Switzerland)
- OSTI ID:
- 22572089
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 06 Vol. 2016; ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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