QCD corrections to electroweak processes in an unconventional scheme:   application to the b -> s gamma decay
  In this work we give a detailed description of a method for the calculation of QCD corrections to electroweak processes in dimensional regularization that does not require any definition of the gamma_5 matrix in d dimensions. This method appears particularly convenient in order to limit the algebraic complexity of higher order calculations. As an example, we compute the leading logarithmic corrections to the b -> s gamma decay. 
Giancarlo Cella, Giuseppe Curci, Giulia Ricciardi and Andrea Vicere'