Determination of the weak phase γ from rate measurements in B±→πK,ππ decays

被引：176

作者：

Neubert, M ^{[1
]}

Rosner, JL

机构：

[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland

[2] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[3] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.81.5076

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A method is described which, under the assumption of SU(3) symmetry, allows one to determine the angle gamma = arg(V-ub*) of the unitarity triangle from time-independent measurements of the branching ratios for the rare two-body decays B+ --> pi(0)K(+) and B- --> pi(0)K(-), as well as of the CP-averaged branching ratios for the decays B+/- --> pi(+/-)K(0) and B+/- --> pi(+/-)pi(0), all of which are of order 10(-5). The effects of electroweak penguin operators are included in a model-independent way, and SU(3)-breaking corrections are accounted for in the factorization approximation. [S0031-9007(98)07845-4].

引用

页码：5076 / 5079

页数：4

共 30 条

[1]

ALEXANDER J, 1998, P 29 INT C HIGH EN P

[2] Possibility of large direct CP violation in B→Kπ-like modes because of long distance rescattering effects and implications for the angle γ -: art. no. 036005 [J].