Journal
PHYSICS LETTERS B
Volume 719, Issue 4-5, Pages 404-408Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2013.01.056
Keywords
Charged Higgs bosons; Extensions of Higgs sector; Neutrino mass
Funding
- Croatian Ministry of Science, Education and Sports [119-0982930-1016]
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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 -> gamma gamma decay rate. The most significant change in the diphoton width comes from a doubly charged scalar Phi(--) which should be the lightest component in the scalar quadruplet. In the part of the parameter space where the h -> gamma gamma decay width is enhanced by a factor 1.25-2 there is a mild suppression of the h -> Z gamma decay width by a factor 0.9-0.7. (C) 2013 Elsevier B.V. All rights reserved.
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