CP ASYMMETRIES IN PURE PENGUIN-INDUCED B-DECAYS

被引：46

作者：

GERARD, JM ^{[1
]}

HOU, WS ^{[1
]}

机构：

[1] PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND

来源：

PHYSICS LETTERS B | 1991年 / 253卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)91755-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Absorptive parts in penguin amplitudes lead to direct CP violation in B-meson decay partial rate asymmetries. Exclusive b --> d modes, such as B+ --> K+KBAR(0)* or B(0) --> K(0)KBAR(0) may be more promising for CP studies within the standard model. Typical branching ratios are of order 10(-6), with asymmetries of O(10%) quite plausible. One could further gain by summing over available modes, without suffering from cancellation in the asymmetries. 10(8) B mesons may suffice, and one is not restricted to the asymmetric e+e-B-factory environment at gamma (4S) energies.

引用

页码：478 / 482

页数：5

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