750 GeV diphoton excess at CERN LHC from a dark sector assisted scalar decay
- 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, Vol. 2016, 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); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
Similar Records
Heavy scalar boson in view of the unconfirmed 750 GeV LHC diphoton excess
From the 750 GeV diphoton resonance to multilepton excesses