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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Crivellin, A., Yamada, Y. Higgs-bosons couplings to quarks and leptons in the supersymmetric Standard Model with a gauge singlet. J. High Energ. Phys. 2015, 56 (2015). https://doi.org/10.1007/JHEP11(2015)056
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DOI: https://doi.org/10.1007/JHEP11(2015)056