CP violation in τ± → π± KSυ and D± → π± KS: the importance of KS-KL interference

被引：50

作者：

Grossman, Yuval ^{[1
]}

Nir, Yosef ^{[2
]}

机构：

[1] Cornell Univ, Inst High Energy Phenomenol, Newman Lab Elementary Particle Phys, Ithaca, NY 14853 USA

[2] Weizmann Inst Sci, Dept Particle Phys & Astrophys, IL-76100 Rehovot, Israel

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2012年 / 04期

基金：

以色列科学基金会;

关键词：

B-Physics; CP violation; DECAYS;

D O I：

10.1007/JHEP04(2012)002

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The B-factories have measured CP asymmetries in the tau -> pi K(S)v and D -> K-S pi modes. The K-S state is identified by its decay to two pions at a time that is close to the K-S lifetime. Within the Standard Model and many of its extensions, the asymmetries in these modes come from CP violation in K-0 - (K) over bar (0) mixing. We emphasize that the interference between the amplitudes of intermediate K-S and K-L is as important as the pure K-S amplitude. Consequently, the measured asymmetries depend on the times over which the relevant decay rates are integrated and on features of the experiment.

引用

页数：9

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