Three-loop matching of the dipole operators for b -> s gamma and b -> s g

Details Three-loop matching of the dipole operators for b -> s gamma and b -> s g Three-loop matching of the dipole operators for b -> s gamma and b -> s g

2004-01-08

arxiv.org/abs/hep-ph/0401041v1

Nucl.Phys. B683 (2004) 277-305

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 5 figures, uses graphicx

Scientific paper

10.1016/j.nuclphysb.2004.02.006

We evaluate the three-loop matching conditions for the dimension-five operators that are relevant for the b -> s gamma decay. Our calculation completes the first out of three steps (matching, mixing and matrix elements) that are necessary for finding the next-to-next-to-leading QCD corrections to this process. All such corrections must be calculated in view of the ongoing accurate measurements of the B -> Xs gamma branching ratio.

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