TY - JOUR
T1 - LHC 750 GeV diphoton excess in a radiative seesaw model
AU - Kanemura, Shinya
AU - Nishiwaki, Kenji
AU - Okada, Hiroshi
AU - Orikasa, Yuta
AU - Park, Seong Chan
AU - Watanabe, Ryoutaro
PY - 2016/12/19
Y1 - 2016/12/19
N2 - 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.
AB - 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.
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U2 - 10.1093/ptep/ptw164
DO - 10.1093/ptep/ptw164
M3 - Article
AN - SCOPUS:85019452540
VL - 2016
JO - Progress of Theoretical and Experimental Physics
JF - Progress of Theoretical and Experimental Physics
SN - 2050-3911
IS - 12
M1 - 123B04
ER -