Proof of factorization for B→Dπ -: art. no. 201806

被引：200

作者：

Bauer, CW ^{[1
]}

Pirjol, D ^{[1
]}

Stewart, IW ^{[1
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.87.201806

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We prove that the matrix elements of four fermion operators mediating the decays (B) over bar (0) --> D+ pi (-) and B- --> D(o)pi (-) factor into the product of a form factor describing the B --> D transition and a convolution of a short distance coefficient with the nonperturbative. pion light-cone wave function. This is shown to all orders in alpha (s), with corrections suppressed by factors of 1/m(b), 1/m(c), and 1/E-pi. It is not necessary to assume that the pion state is dominated by the q (q) over bar Fock state.

引用

页码：201806 / 1

页数：4

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