Proof of factorization for B → Dπ

Christian W. Bauer, Dan Pirjol, Iain W. Stewart

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

We prove that the matrix elements of four fermion operators mediating the decays B¯0 → D+π and B → D0π factor into the product of a form factor describing the B → Dπ transition and a convolution of a short distance coefficient with the nonperturbative pion light-cone wave function. This is shown to all orders in αs, with corrections suppressed by factors of 1/mb, 1/mc, and 1/Eπ. It is not necessary to assume that the pion state is dominated by the qq¯ Fock state.

Original languageEnglish
Pages (from-to)201806-1-201806-4
JournalPhysical Review Letters
Volume87
Issue number20
DOIs
StatePublished - 12 Nov 2001

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