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LHC 750 GeV diphoton excess in a radiative seesaw model
S. Kanemura, , H. Okada, Y. Orikasa, S.C. Park, R. Watanabe
Published in Physical Society of Japan
Volume: 2016
Issue: 12
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. © The Author(s) 2016.
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Published in Physical Society of Japan
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