Electroweak penguins, final state interaction phases, and CP violation in B→Kπ decays

被引：61

作者：

Deshpande, NG ^{[1
]}

He, XG

Hou, WS

Pakvasa, S

机构：

[1] Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA

[2] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan

[3] Univ Melbourne, Sch Phys, Parkville, Vic 3052, Australia

[4] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[5] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 90822 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.82.2240

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The recently observed B- --> K- pi(0), (K) over bar(0)pi(-) and (B) over bar(0) --> K- pi(+) decay modes appear to have nearly equal branching ratios. This suggests that tree and electroweak penguins play an important role, and inclusion of the latter improves agreement between factorization calculation and experimental data. The value of gamma in the range of 90 degrees-130 degrees and 220 degrees-260 degrees is favored, while the (B) over bar(0) --> (K) over bar(0)pi(0) rate is suppressed. Direct CP violation for B --> K pi modes can be large if final state interaction phases are large.

引用

页码：2240 / 2243

页数：4

共 29 条

[21]

HE XG, IN PRESS PHYS REV LE

[22] IMPLICATIONS OF A HEAVY TOP QUARK AND A 4TH GENERATION ON THE DECAYS B-]KL+L-,KVV [J].