Is there a paradox in CP asymmetries of τ± → KL,Sπ±ν decays?

被引：21

作者：

Calderon, G.

Delepine, D.

Lopez Castro, G.

机构：

[1] Univ Guanajuato, Inst Fis, Guanajuato, Mexico

[2] CINVESTAV, Dept Fis, Mexico City 07000, DF, Mexico

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.75.076001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the description of unstable K-L,K-S particles in quantum field theory (QFT), we compute the time-dependent probabilities for transitions between asymptotic states in tau(+/-)->[pi(+)pi(-)](K)pi(+/-)nu decays, where the pair [pi(+)pi(-)](K) is the product of (intermediate state) neutral kaon decays. Then we propose a definition of tau decays into K-L and K-S states, which reflects into the cancellation between their CP rate asymmetries, thus solving in a natural way the paradox pointed out in [I. I. Bigi and A. I. Sanda, Phys. Lett. B 625, 47 (2005).]. Since our definition of K-L,K-S final states in tau decays is motivated on experimental grounds, our predictions for the integrated CP rate asymmetries can be tested in a dedicated experiment.

引用

页数：4

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