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Effect of charged scalar loops on photonic decays of a fermiophobic Higgs boson

A. G. Akeroyd1,2, Marco A. Díaz3, and Maximiliano A. Rivera3

  • 1Department of Physics, National Cheng Kung University, Tainan 701, Taiwan
  • 2National Center for Theoretical Sciences, Taiwan
  • 3Departamento de Física, Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Santiago, Chile

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Phys. Rev. D 76, 115012 – Published 20 December, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.115012

Abstract

Higgs bosons with very suppressed couplings to fermions (“fermiophobic Higgs bosons,” hf) can decay to two photons (γγ) with a branching ratio significantly larger than that expected for the standard model Higgs boson for mhf<150  GeV. Such a particle would give a clear signal at the LHC and can arise in the two Higgs doublet model (type I) in which hf→γγ is mediated by W± and charged Higgs boson (H±) loops. We show that the H± loops can cause both constructive and destructive contributions with a magnitude considerably larger than the anticipated precision in the measurement of the photonic decay channel at future hadron and lepton colliders.

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Phys. Rev. D 76, 115012– Published 20 December, 2007
  • Received 30 August 2007

© 2007 American Physical Society

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