Eur. Phys. J. C 21, 115-121 (2001)
Semi-leptonic B decays and the two-pion distribution amplitudesM. Maul
Department of Theoretical Physics, Lund University, Sölvegatan 14A, 223 62 Lund, Sweden
(Received: 11 April 2001 / Published online: 19 July 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )
We show that the semi-leptonic decay 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.
© Società Italiana di Fisica, Springer-Verlag 2001