Large-m_c Asymptotic Behaviour of O(alpha_s^2) Corrections to B -> X_s gamma
Mikolaj Misiak, Matthias Steinhauser
TL;DR
This paper calculates NNLO QCD corrections to the B -> X_s gamma decay rate in the heavy charm quark limit, providing essential data for estimating higher-order effects in the branching ratio.
Contribution
It offers a detailed evaluation of O(alpha_s^2) corrections in the heavy charm limit, aiding interpolation methods for the decay rate estimation.
Findings
NNLO QCD corrections evaluated in the heavy charm limit
Results critical for interpolation in charm mass
Enhanced precision in B -> X_s gamma branching ratio
Abstract
We present details of our evaluation of the NNLO QCD corrections to BR(B -> X_s gamma) in the heavy charm limit m_c >> m_b/2. Results of this calculation have been essential for estimating O(alpha_s^2) effects in this branching ratio via interpolation in m_c.
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