Towards a next-to-leading logarithmic result in $B \to X_s γ$

Details Towards a next-to-leading logarithmic result in $B \to X_s γ$ Towards a next-to-leading logarithmic result in $B \to X_s γ$

1996-08-27

arxiv.org/abs/hep-ph/9608449v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure included, uses sprocl.sty and psfig.sty. Submitted for the DPF96 proceedings

Scientific paper

The calculation of the $O(\a_s)$ virtual corrections to the matrix element of the inclusive decay $b \to s \gamma$ is reported. These contributions drastically reduce the large renormalization scale dependence of the leading logarithmic calculation. Combining these results with the preliminary result for the Wilson coefficient $C_7(m_b)$ calculated recently by Chetyrkin, Misiak, and M\"unz, we estimate the branching ratio to be $BR(B \to X_s \gamma)=(3.25 \pm 0.50) \times 10^{-4}$.

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