NNLL QCD Contribution of the Electromagnetic Dipole Operator to Gamma(anti-B -> X(s) gamma)

Abstract

We present an independent calculation of that part of the O(α_s^2) contribution to the decay width Γ(\bar B -> X_s γ) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of Γ(\bar B -> X_s γ) which will resolve the charm quark mass ambiguity appearing at NLL accuracy.

15 pages, uses axodraw.sty

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Cited by in corpus (32)

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• Flavor Physics in the Quark Sector
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• B, D and K decays
• Bound on minimal universal extra dimensions from Bbar -> X_s gamma
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• QCD Corrections to the Radiative Decay B -> X_s gamma
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