Complete resummation of chirally-enhanced loop-effects in the MSSM with non-minimal sources of flavor-violation

Abstract

In this article we present the complete resummation of the leading chirallyenhanced corrections stemming from gluino-squark, chargino-sfermion and neutralino-sfermion loops in the MSSM with non-minimal sources of flavor-violation. We compute the finite renormalization of fermion masses and the CKM matrix induced by chirality-flipping self-energies. In the decoupling limit MSUSY ≫ v, which is an excellent approximation to the full theory, we give analytic results for the effective gaugino(higgsino)-fermion- sfermion and the Higgs-fermion-fermion vertices. Using these vertices as effective Feynman rules, all leading chirally-enhanced corrections can consistently be included into perturbative calculations of Feynman amplitudes. We also give a generalized parametrization for the bare CKM matrix which extends the classic Wolfenstein parametrization to the case of complex parameters λ and A. © SISSA 2011.