TY  - JOUR
AU  - Tostado, S. L.
AU  - Lopez Castro, G.
PY  - 2016
DA  - 2016//
TI  - Radiative corrections of O(alpha) to B- -> V(0)l(-)(nu)over-bar(l) decays
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 495 - 15pp
VL  - 76
IS  - 9
PB  - Springer
AB  - The O(alpha) electromagnetic radiative corrections to the B- -> V(0)l(-)(nu) over bar (l) (V is a vector meson and l a charged lepton) decay rates are evaluated using the cutoff method to regularize virtual corrections and incorporating intermediate resonance states in the real-photon amplitude to extend the region of validity of the soft-photon approximation. The electromagnetic and weak form factors of hadrons are assumed to vary smoothly over the energies of virtual and real photons under consideration. The cutoff dependence of radiative corrections upon the scale Lambda that separates the long-and short-distance regimes is found to be mild and is considered as an uncertainty of the calculation. Owing to partial cancellations of electromagnetic corrections evaluated over the three-and four-body regions of phase space, the photoninclusive corrected rates are found to be dominated by the short-distance contribution. These corrections will be relevant for a precise determination of the b quark mixing angles by testing isospin symmetrywhen measurements of semileptonic rates of charged and neutral B mesons at the fewpercent level become available. For completeness, we also provide numerical values of radiative corrections in the three-body region of the Dalitz plot distributions of these decays.
SN  - 1434-6044
UR  - http://arxiv.org/abs/1510.08020
UR  - https://doi.org/10.1140/epjc/s10052-016-4329-9
DO  - 10.1140/epjc/s10052-016-4329-9
LA  - English
N1  - WOS:000389594000001
ID  - Tostado+LopezCastro2016
ER  -