%0 Journal Article
%T Two-loop QCD corrections to charged-Higgs-mediated $b\to s¦Ã$ decay
%A P. Ciafaloni
%A A. Romanino
%A A. Strumia
%J Physics
%D 1997
%I arXiv
%R 10.1016/S0550-3213(98)00190-4
%X The charged-Higgs-mediated contribution to the Wilson coefficient of the $b\to s\gamma$ magnetic penguin is expected to be one of the more promising candidates for a supersymmetric effect in B physics, probably the only one in gauge-mediated models. We compute the two-loop QCD correction to it. With naive dimensional regularization and MSbar subtraction, for reasonable values of the charged Higgs mass and for mu-bar = m_top, we find a (10--20)% reduction of the corresponding one-loop effect.
%U http://arxiv.org/abs/hep-ph/9710312v2