Journal Articles Physics Letters B Year : 2004

Higgs Decay in the Two Higgs Doublet Model: Large quantum effects in the decoupling regime

A. Arhrib
  • Function : Author
W. Hollik
  • Function : Author
S. Penaranda
  • Function : Author

Abstract

We study the Higgs-boson decays h0 -> b \bar{b}, h0 -> \gamma \gamma and h0 -> \gamma Z within the framework of the Two Higgs Doublet Model (THDM) in the context of the decoupling regime, together with tree level unitarity constraints. We show that when the light CP-even Higgs boson of the THDM mimics the Standard-Model Higgs boson, not only the one-loop effects to h0 -> {\gamma \gamma ,\gamma Z} but also the one-loop contribution to h0 -> b \bar{b} can be used to distinguish between THDM and SM. The size of the quantum effects in h0 -> b \bar{b} are of the same order as in h0 -> {\gamma \gamma ,\gamma Z} and can reach 25% in both cases.

Dates and versions

hal-00335193 , version 1 (28-10-2008)

Identifiers

Cite

Michel Capdequi-Peyranere, A. Arhrib, W. Hollik, S. Penaranda. Higgs Decay in the Two Higgs Doublet Model: Large quantum effects in the decoupling regime. Physics Letters B, 2004, 579 (3), pp.361-370. ⟨10.1016/j.physletb.2003.10.006⟩. ⟨hal-00335193⟩
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