Violation of time-reversal invariance and CPLEAR measurements

被引：37

作者：

Alvarez-Gaumé, L ^{[1
]}

Kounnas, C

Lola, S

Pavlopoulos, P

机构：

[1] CERN, Div Theory, CH-1211 Geneva, Switzerland

[2] Univ Basel, Inst Phys, CH-4056 Basel, Switzerland

[3] CPLEAR Collaborat, CH-1211 Geneva, Switzerland

来源：

PHYSICS LETTERS B | 1999年 / 458卷 / 2-3期

关键词：

D O I：

10.1016/S0370-2693(99)00520-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Motivated by the recent CPLEAR measurement on the time-reversal non-invariance, we review the situation concerning the experimental measurements of charge conjugation, parity violation and time reversibility, in systems with non-Hermitean Hamiltonians. This includes in particular neutral meson systems, like K-0 - (K) over bar(0), D-0 - (D) over bar(0) and B-0 - (B) over bar(0). We discuss the formalism that describes particle-antiparticle mixing and time evolution of states, paying particular emphasis to the orthogonality conditions of incoming and outgoing states. As a result, we confirm that the CPLEAR experiment makes a direct measurement of violation of time-reversal without any assumption of unitarity and CPT-violation. The asymmetry which signifies T-violation, is found to be independent of time and decay processes. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：347 / 354

页数：8

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