2007/08/31 by A. G. Akeroyd, M. A. Díaz, Marco A. Diaz +1
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.1103/physrevd.76.115012
published as Phys.Rev.D76:115012,2007 · 18 pages, 5 figures, clarifications added, one reference added, accepted by Physical Review D
arxiv created 2007/11/16 · openalex publication_date 2007/12/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Higgs bosons with very suppressed couplings to fermions (``fermiophobic Higgs bosons,'' hf) can decay to two photons (\ensuremathγ\ensuremathγ) with a branching ratio significantly larger than that expected for the standard model Higgs boson for m_hf<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\ensuremath→\ensuremathγ\ensuremathγ is mediated by W^\ifmmode±\else\textpm\fi and charged Higgs boson (H^\ifmmode±\else\textpm\fi) loops. We show that the H^\ifmmode±\else\textpm\fi 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.