LHC 750 GeV diphoton excess in a radiative seesaw model

Shinya Kanemura, Kenji Nishiwaki, Hiroshi Okada, Yuta Orikasa, Seong Chan Park, Ryoutaro Watanabe

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We investigate a possibility for explaining the recently announced 750 GeV diphoton excess by the ATLAS and CMS experiments at the CERN Large Hadron Collider in a model with multiple doubly charged particles, that was originally suggested for explaining tiny neutrino masses through a three-loop effect in a natural way. The enhanced radiatively generated effective coupling of a new singlet scalar S with diphoton with multiple charged particles in the loop enlarges the production rate of S in pp → S +X via a photon fusion process and also the decay width Γ(S → γ γ ) even without assuming a tree-level production mechanism. We provide detailed analysis on the cases with or without allowing mixing between S and the standard model Higgs doublet.

Original languageEnglish
Article number123B04
JournalProgress of Theoretical and Experimental Physics
Volume2016
Issue number12
DOIs
Publication statusPublished - 2016 Dec 19

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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