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 journalArticlepeer-review

16 Citations (Scopus)


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
Issue number12
Publication statusPublished - 2016 Dec 19

Bibliographical note

Publisher Copyright:
© The Author(s) 2016.

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


Dive into the research topics of 'LHC 750 GeV diphoton excess in a radiative seesaw model'. Together they form a unique fingerprint.

Cite this