Supersymmetric Higgs Singlet Effects on FCNC Observables

por Robert N. Hodgkinson (Manchester University)

martes 16 sept. 2008 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Extensions of the Minimal Supersymmetric Standard Model generically include additional gauge-singlet Higgs superfields, which enable one to resolve the mu-problem. Such singlet Higgs fields may contribute to FCNC observables through loop-induced flavour-changing Yukawa interactions. The strength of these couplings is enhanced by large values of tan(beta). We present an effective Lagrangian which includes such effects in a fully gauge- and flavour-covarient way and use it to study FCNC observables, within both the Minimal Non-minimal Supersymmetric Standard Model and the Next-to-Minimal Supersymmetric Standard Model.