Progress in the evaluation of the anti-B -> X_s gamma decay rate at NNLO

Abstract

The theoretical status of NNLO QCD corrections to the inclusive radiative anti-B -> X_s gamma decay in the standard model is briefly overviewed. Emphasis is put on recent results for three-loop fermionic corrections to matrix elements of the most relevant four-quark operators.

Comments: Presented at the XXXI International Conference of Theoretical Physics "Matter To The Deepest: Recent Developments In Physics of Fundamental Interactions", Ustron, 5-11 September 2007, Poland; 5 pages