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

Jong-Phil Lee

hep-pharXiv:hep-ph/0301148

Abstract

The form factors of Bπ(ρ) 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) 1/E2+1/E3, 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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