Proof of factorization for B → Dπ

C. W. Bauer, D. Pirjol, I. W. Stewart

Research output: Contribution to journalArticlepeer-review

213 Scopus citations

Abstract

An all orders proof of factorization is given for B̄0→D+π- and B-→D0π-, in the limit where the heavy quark masses approach infinity. In particular, three types of factorization are distinguished. First, the generalized factorization of matrix elements of four quark operators into a form factor describing the B → D transition and a convolution of a short distance coefficient with the pion wave function is proved. A second type of factorization, between hard and infrared scales, is related to defining the correct effective theory. Finally, a third type is factorization theorems between soft and collinear degrees of freedom.

Original languageEnglish
Article number201806
Pages (from-to)201806/1-201806/4
JournalPhysical Review Letters
Volume87
Issue number20
StatePublished - 12 Nov 2001

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