On the QCD corrections to $b\to s\gamma$ in supersymmetric models

Abstract

We reinvestigate the leading QCD corrections to the radiative decay $b\to s\gamma forsupersymmetricextensionsoftheStandardModel.AlthoughthemajorcontributionstothecorrectionsoriginatefromtherunningoftheeffectiveLagrangianfromtheWscaledowntothe$b$ scale, additional corrections are expected from large mass splittings between the particles running in the loops, as well as from integrating out heavy particles at scales different from the W mass. The calculation is performed in the framework of effective field theories.

Comments: LaTeX, 43 pages + 4 embedded Postscript figures (requires epsf.sty), SLAC-PUB-6525, June 1994