Radiative Yukawa Couplings for Supersymmetric Higgs Singlets at Large tan(beta)

Details Radiative Yukawa Couplings for Supersymmetric Higgs Singlets at Large tan(beta) Radiative Yukawa Couplings for Supersymmetric Higgs Singlets at Large tan(beta)

2006-12-15

arxiv.org/abs/hep-ph/0612188v2

Phys.Rev.D76:015007,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 6 eps figures, LaTeX, accepted for publication in Physical Review D

Scientific paper

10.1103/PhysRevD.76.015007

Singlet Higgs bosons present in extensions of the MSSM can have sizable Yukawa couplings to the b quark and the tau lepton for large values of tan(beta) at the 1-loop level. We present an effective Lagrangian which incorporates these tan(beta)-enhanced Yukawa couplings and which enables us to study their effect on singlet Higgs-boson phenomenology within the context of both the mnSSM and the NMSSM. In particular, we find that the loop-induced coupling can be a significant effect for the singlet pseudoscalar, and may dominate its decay modes. Further implications of the tan(beta)-enhanced Yukawa couplings for the phenomenology of the singlet Higgs bosons are briefly discussed.

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