LARGE PENGUIN EFFECTS IN THE CP ASYMMETRY OF B-D(0)-]PI+PI-

被引：75

作者：

GRONAU, M

机构：

[1] Stanford Linear Accelerator Center, Stanford University, Stanford

来源：

PHYSICS LETTERS B | 1993年 / 300卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(93)90765-A

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Penguin effects in the CP asymmetries of B(d)0 --> pi+pi-, B(d)0 --> rho+/-pi-/+ and B(d)0 --> a(l)+/-pi-/+ are studied as function of the CKM unitarity triangle alpha. Despite a fairly small penguin amplitude, it leads to quite sizeable uncertainties in the determination of sin 2alpha from all but very large asymmetries. This effect is maximal for vanishing final state interaction phases, for which it can cause, for instance, an asymmetry of 40% if alpha = pi/2.

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页码：163 / 168

页数：6

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