Dresden 2013 – scientific programme

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T: Fachverband Teilchenphysik

T 19: Flavourphysik (Theorie) 2

T 19.7: Talk

Monday, March 4, 2013, 18:20–18:35, WIL-B122

NNLO corrections to the decay B→ Dπ — •Susanne Kränkl and Tobias Huber — Universität Siegen/Germany

Hadronic decays of B mesons provide an essential contribution in testing the CKM structure of the Standard Model. It is therefore mandatory to increase the precision of their branching ratios as much as possible, both experimentally and theoretically. In this talk we investigate the decay B→ Dπ at NNLO in QCD factorization, a framework which disentangles perturbative from non-perturbative effects in the heavy-mass limit. We present the first results for the two-loop correction to the hard scattering kernel, including calculational techniques such as the Laporta reduction to master integrals.