B → M1M2:: Factorization, charming penguins, strong phases, and polarization -: art. no. 054015

被引：267

作者：

Bauer, CW ^{[1
]}

Pirjol, D

Rothstein, IZ

Stewart, IW

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA

[3] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

来源：

PHYSICAL REVIEW D | 2004年 / 70卷 / 05期

关键词：

D O I：

10.1103/PhysRevD.70.054015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using the soft-collinear effective theory we derive the factorization theorem for the decays B-->M1M2 with M-1,M-2=pi,K,rho,K-*, at leading order in Lambda/E-M and Lambda/m(b). The results derived here apply even if alpha(s)(E(M)Lambda) is not perturbative, and we prove that the physics sensitive to the ELambda scale is the same in B-->M1M2 and B-->M form factors. We argue that c (c) over bar penguins could give long-distance effects at leading order. Decays to two transversely polarized vector mesons are discussed. Analyzing B-->pipi we find predictions for B-0-->pi(0)pi(0) and |V-ub|f(+)(B-->pi)(0) as a function of gamma.

引用

页数：10

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