Radiative Corrections to the Decay $B\to πeν$ and the Heavy Quark Limit

Details Radiative Corrections to the Decay $B\to πeν$ and the Heavy Quark Limit Radiative Corrections to the Decay $B\to πeν$ and the Heavy Quark Limit

1997-09-04

arxiv.org/abs/hep-ph/9709243v2

Phys.Lett.B417:154-162,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages Latex + 3 figures; changed one footnote and moved it into main text; enlarged acknowledgements

Scientific paper

10.1016/S0370-2693(97)01371-3

We calculate radiative corrections to the light-cone sum rule for the semileptonic form factor in $B\to\pi e\nu$ decays and thus remove the major uncertainty in determining the CKM mixing angle $|V_{ub}|$ by this method. We discuss the remaining uncertainties and perspectives for further studies. The structure of the radiative corrections suggests factorization of soft (end-point) and hard rescattering contributions in heavy-to-light decays in the heavy quark limit.

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