Semi-leptonic B-decays and the two-pion distribution amplitudes

Details Semi-leptonic B-decays and the two-pion distribution amplitudes Semi-leptonic B-decays and the two-pion distribution amplitudes

2001-04-08

arxiv.org/abs/hep-ph/0104078v3

Eur.Phys.J.C21:115-121,2001

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 4 figures, LaTeX, two minor typos in the text corrected, two references updated. Version to be published in EJPC

Scientific paper

10.1007/s100520100734

We show that the semi-leptonic decay B+ -> pi+ pi- l+ \nu_l can be used as a
source of information for two-pion distribution amplitudes. The connection
between these amplitudes and the B-meson decay width is achieved by the light
cone sum rule method. We show the relevant distribution amplitudes and give the
formula for the decay width.

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