Heavy-to-light form factors of B decays at large recoil

Details Heavy-to-light form factors of B decays at large recoil Heavy-to-light form factors of B decays at large recoil

2003-01-19

arxiv.org/abs/hep-ph/0301148v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, no figures

Scientific paper

The form factors of $B\to\pi(\rho)$ decays are analyzed using the light-cone sum rules in the framework of the soft-collinear effective theory (SCET). We establish the sum rules for the leading and the next-to-leading order (NLO) nonperturbative functions of the SCET. Explicit calculation shows that (leading)+(NLO) $\sim 1/E^2+1/E^3$, where $E$ is the large recoiling energy. The results are compatible with the literatures. Also the validity of this hybrid formalism is discussed.

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