NNLO QCD corrections to B -> X_s gamma

2006/09/27 by Misiak, M.
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.hep-ph/0609289

Abstract

Current status of the NNLO QCD corrections to B -> X_s gamma is reviewed. The calculations include three-loop matching conditions, four-loop anomalous dimensions as well as two- and three-loop on-shell amplitudes. Certain parts of the three-loop matrix elements are found by interpolation in the charm quark mass between the large-beta₀ approximation in the m_c=0 case and the complete result in the m_c >> m_b/2 case.

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