HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Science / Faculty of Science >
Peer-reviewed Journal Articles, etc >

Enhancement of Higgs to diphoton decay width in non-perturbative Higgs Model

Files in This Item:
1207.5102v3.pdf109.85 kBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Enhancement of Higgs to diphoton decay width in non-perturbative Higgs Model
Authors: Haba, Naoyuki Browse this author
Kaneta, Kunio Browse this author
Mimura, Yukihiro Browse this author
Takahashi, Ryo Browse this author
Issue Date: 29-Jan-2013
Publisher: Elsevier
Journal Title: Physics Letters B
Volume: 718
Issue: 4-5
Start Page: 1441
End Page: 1446
Publisher DOI: 10.1016/j.physletb.2012.12.049
Abstract: We investigate a possibility if a loop diagram via Higgsino can enhance the Higgs to diphoton decay width in supersymmetric models with an extension of Higgs sector. A model with an additional non-renormalizable term of Higgs fields is firstly analyzed where the higher order term can introduce the Higgs coupling to Higgsinos as well as charged Higgs bosons. We point out that a choice of the Higgs coupling to obtain a significant size of enhancement of diphoton decay width reduces the Higgs mass and/or a size of non-renormalizable term needs to be large and a cutoff scale is around the weak scale. Another model in which the Higgsino mass term is generated by a non-perturbative instanton effect via a strong dynamics in a context of SUSY QCD is also suggested. It is shown that the sign of the Higgs coupling to fermions is opposite from perturbative models due to an operator including bosonic fields in the denominator and a constructive contribution to the diphoton decay amplitude can be easily obtained in this kind of model. (C) 2012 Elsevier B.V. All rights reserved.
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 高橋 亮

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University