Consistent Higher-Order Corrections to Stop_i -> Sbottom_j H^+ in the Complex MSSM

Abstract

We review an analysis of a consistent renormalization of the top and bottom quark/squark sector of the MSSM with complex parameters (cMSSM). Various renormalization schemes are defined, analyzed analytically and tested numerically in the decays Stop_2 -> Sbottom_i H^+/W^+ (i = 1,2). No scheme is found that produces numerically acceptable results over all the cMSSM parameter space, where problems occur mostly already for real parameters. Some numerical examples for Gamma(Stop_2 -> Sbottom_1 H^+) in our preferred scheme, "m_b, A_b DRbar" are shown.

6 pages, one figure, talk given at the "Third International Workshop on Prospects for Charged Higgs Discovery at Colliders - CHARGED2010", September 27-30, 2010, Uppsala, Sweden