Bremsstrahlung corrections to the decay b s γ
Abstract
We calculate the O(αs) gluon Bremsstrahlung corrections to the inclusive decay b → s γ, involving the full operator basis O1 -- O8. Confirming and extending earlier calculations of Ali and Greub, we give formulas for the total decay width as well as the perturbative photon spectrum, regarding the former as a necessary part of the forthcoming complete NLO analysis. We explore in detail the renormalization scale dependence of our results and find it considerably increased.
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