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순수물리이론 연구단
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LHC 750 GeV Diphoton excess in a radiative seesaw model

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Title
LHC 750 GeV Diphoton excess in a radiative seesaw model
Author(s)
Shinya Kanemura; Kenji Nishiwaki; Hiroshi Okada; Yuta Orikasa; Seong Chan Park; Ryoutaro Watanabe
Publication Date
2016-12
Journal
PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS, v.2016, no.12, pp.123B04 -
Publisher
OXFORD UNIV PRESS INC
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 throug a three-loop effect in a natural way. The enhanced radiatively generated effective coupling of a new singlet scalarSwith diphoton with multiple charged particles in the loop enlarges the production rate ofSinpp→S+Xvia a photon fusion process and also the decay width(S→γ γ )even without assuming a tree-level production mechanism. We provide detailed analysis on the cases with or without allowing mixing betweenSand the standard model Higgs doublet.
URI
http://pr.ibs.re.kr/handle/8788114/3340
DOI
10.1093/ptep/ptw164
ISSN
2050-3911
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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