Effect of Charged Scalar Loops on Photonic Decays of a Fermiophobic Higgs

Details Effect of Charged Scalar Loops on Photonic Decays of a Fermiophobic Higgs Effect of Charged Scalar Loops on Photonic Decays of a Fermiophobic Higgs

2007-08-14

arxiv.org/abs/0708.1939v2

Phys.Rev.D76:115012,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 5 figures, clarifications added, one reference added, accepted by Physical Review D

Scientific paper

10.1103/PhysRevD.76.115012

Higgs bosons with very suppressed couplings to fermions ("Fermiophobic Higgs bosons", h_f) can decay to two photons (\gamma\gamma) with a branching ratio significantly larger than that expected for the Standard Model Higgs boson for m_{h_f}<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 h_f -> \gamma\gamma 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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