Bremsstrahlung corrections to the decay $b \to s γ$

Details Bremsstrahlung corrections to the decay $b \to s γ$ Bremsstrahlung corrections to the decay $b \to s γ$

1995-12-07

arxiv.org/abs/hep-ph/9512252v2

Phys.Rev. D54 (1996) 938-948

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, LaTeX, uses epsf.sty and rotate.sty. 4 figures (uuencoded postscript) appended as seperate file. A complete postscri

Scientific paper

10.1103/PhysRevD.54.938

We calculate the O($\alpha_s$) gluon Bremsstrahlung corrections to the inclusive decay $b \rightarrow s \gamma$, involving the full operator basis $\hat O_1$ -- $\hat O_8$. 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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