Higgs-bosons couplings to quarks and leptons in the supersymmetric Standard Model with a gauge singlet

Andreas Crivellin; Youichi Yamada

doi:10.1007/JHEP11(2015)056

Higgs-bosons couplings to quarks and leptons in the supersymmetric Standard Model with a gauge singlet

Andreas Crivellin, Youichi Yamada

SCI - Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Abstract: The loop corrections to the couplings of Higgs bosons to quarks and charged leptons are calculated within supersymmetric versions of the Standard Model, extended by a gauge singlet. The effective couplings of the SU(2)_L doublet and singlet Higgs bosons to quarks and leptons, induced by sfermion loops, are derived. Analytic expressions for the case of generic sfermion flavour mixing, including the complete resummation of all chirally-enhanced contributions are presented. These results are important in scenarios in which the mixing between singlet and doublet components of Higgs bosons is small, and the (pseudo) scalar component of the doublet is light. The calculated loop effects can have important consequences in flavour physics, especially for ΔF = 2 processes.

Original language	English
Article number	56
Pages (from-to)	1-31
Number of pages	31
Journal	Journal of High Energy Physics
Volume	2015
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2015)056
Publication status	Published - 2015 Nov 1

Keywords

Supersymmetry Phenomenology

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1007/JHEP11(2015)056

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Cite this

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N2 - Abstract: The loop corrections to the couplings of Higgs bosons to quarks and charged leptons are calculated within supersymmetric versions of the Standard Model, extended by a gauge singlet. The effective couplings of the SU(2)L doublet and singlet Higgs bosons to quarks and leptons, induced by sfermion loops, are derived. Analytic expressions for the case of generic sfermion flavour mixing, including the complete resummation of all chirally-enhanced contributions are presented. These results are important in scenarios in which the mixing between singlet and doublet components of Higgs bosons is small, and the (pseudo) scalar component of the doublet is light. The calculated loop effects can have important consequences in flavour physics, especially for ΔF = 2 processes.

AB - Abstract: The loop corrections to the couplings of Higgs bosons to quarks and charged leptons are calculated within supersymmetric versions of the Standard Model, extended by a gauge singlet. The effective couplings of the SU(2)L doublet and singlet Higgs bosons to quarks and leptons, induced by sfermion loops, are derived. Analytic expressions for the case of generic sfermion flavour mixing, including the complete resummation of all chirally-enhanced contributions are presented. These results are important in scenarios in which the mixing between singlet and doublet components of Higgs bosons is small, and the (pseudo) scalar component of the doublet is light. The calculated loop effects can have important consequences in flavour physics, especially for ΔF = 2 processes.

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