Enhancement of h→γγ by seesaw-motivated exotic scalars

Picek, Ivica and Radovčić, Branimir (2013) Enhancement of h→γγ by seesaw-motivated exotic scalars. Physics Letters B, 719 (4-5). pp. 404-408. ISSN 0370-2693

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.
Language: English

Download (271kB) | Preview

Abstract

We examine the role of seesaw-motivated exotic scalars in loop-mediated Higgs decays. We consider a simple TeV-scale seesaw model built upon the fermionic quintuplet mediator in conjunction with the scalar quadruplet, where we examine portions of the model parameter space for which the contributions of charged components of the scalar quadruplet significantly increase the h→γγ decay rate. The most significant change in the diphoton width comes from a doubly charged scalar Φ−− which should be the lightest component in the scalar quadruplet. In the part of the parameter space where the h→γγ decay width is enhanced by a factor 1.25–2 there is a mild suppression of the h→Zγ decay width by a factor 0.9–0.7.

Item Type: Article
Keywords: charged Higgs bosons, extensions of Higgs sector, neutrino mass
Date: 2013
Subjects: NATURAL SCIENCES > Physics
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982930-1016
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 11 May 2014 05:51
Last Modified: 23 Feb 2016 15:39
URI: http://digre.pmf.unizg.hr/id/eprint/1004

Actions (login required)

View Item View Item

Nema podataka za dohvacanje citata