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

12 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

Fingerprint

charged particles
neutrinos
fusion
scalars
photons
decay

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Kanemura, Shinya ; Nishiwaki, Kenji ; Okada, Hiroshi ; Orikasa, Yuta ; Park, Seong Chan ; Watanabe, Ryoutaro. / LHC 750 GeV diphoton excess in a radiative seesaw model. In: Progress of Theoretical and Experimental Physics. 2016 ; Vol. 2016, No. 12.
@article{b3d58b16bbd542f08587483866f12b75,
title = "LHC 750 GeV diphoton excess in a radiative seesaw model",
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.",
author = "Shinya Kanemura and Kenji Nishiwaki and Hiroshi Okada and Yuta Orikasa and Park, {Seong Chan} and Ryoutaro Watanabe",
year = "2016",
month = "12",
day = "19",
doi = "10.1093/ptep/ptw164",
language = "English",
volume = "2016",
journal = "Progress of Theoretical and Experimental Physics",
issn = "2050-3911",
publisher = "Oxford University Press",
number = "12",

}

Kanemura, S, Nishiwaki, K, Okada, H, Orikasa, Y, Park, SC & Watanabe, R 2016, 'LHC 750 GeV diphoton excess in a radiative seesaw model', Progress of Theoretical and Experimental Physics, vol. 2016, no. 12, 123B04. https://doi.org/10.1093/ptep/ptw164

LHC 750 GeV diphoton excess in a radiative seesaw model. / Kanemura, Shinya; Nishiwaki, Kenji; Okada, Hiroshi; Orikasa, Yuta; Park, Seong Chan; Watanabe, Ryoutaro.

In: Progress of Theoretical and Experimental Physics, Vol. 2016, No. 12, 123B04, 19.12.2016.

Research output: Contribution to journalArticle

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.

UR - http://www.scopus.com/inward/record.url?scp=85019452540&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019452540&partnerID=8YFLogxK

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 -