QCD sum rules on the light cone and B -> pi form factors

Details QCD sum rules on the light cone and B -> pi form factors QCD sum rules on the light cone and B -> pi form factors

1999-11-30

arxiv.org/abs/hep-ph/9911530v2

J.Phys.G26:737,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, talk given by S. Weinzierl at the UK Phenomenology Workshop on Collider Physics, Durham, 19-24 September

Scientific paper

10.1088/0954-3899/26/5/338

The semileptonic decay B -> pi l nu is one of the most important reactions for the determination of the CKM matrix element |V_{ub}|. However, in order to extract |V_{ub}| from data one needs an accurate theoretical calculation of the hadronic matrix element describing the B to pi transition. QCD sum rules, based on operator-product expansion on the light-cone, provide a reliable approach to this aim. QCD corrections and higher twist contributions can be taken systematically into account.

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