Determination of the T- and CPT-violation parameters in the neutral-kaon system using the Bell-Steinberger relation and data from CPLEAR

被引：61
|
作者：
Apostolakis, A [1 ]
Aslanides, E
Backenstoss, G
Bargassa, P
Behnke, O
Benelli, A
Bertin, V
Blanc, F
Bloch, P
Carlson, P
Carroll, M
Cawley, E
Chertok, MB
Danielsson, M
Dejardin, M
Derre, J
Ealet, A
Eleftheriadis, C
Fetscher, W
Fidecaro, M
Filipcic, A
Francis, D
Fry, J
Gabathuler, E
Gamet, R
Gerber, HJ
Go, A
Haselden, A
Hayman, PJ
Henry-Couannier, F
Hollander, RW
Jon-And, K
Kettle, PR
Kokkas, P
Kreuger, R
Le Gac, R
Leimgruber, F
Mandic, I
Manthos, N
Marel, G
Mikuz, M
Miller, J
Montanet, F
Muller, A
Nakada, T
Pagels, B
Papadopoulos, I
Pavlopoulos, P
Polivka, G
Rickenbach, R
机构：
[1] Univ Athens, GR-10679 Athens, Greece
[2] Univ Basel, CH-4003 Basel, Switzerland
[3] Boston Univ, Boston, MA 02215 USA
[4] CERN, Geneva, Switzerland
[5] LIP, Lisbon, Portugal
[6] Univ Coimbra, P-3000 Coimbra, Portugal
[7] Delft Univ Technol, NL-2600 AA Delft, Netherlands
[8] Univ Fribourg, CH-1700 Fribourg, Switzerland
[9] Univ Ioannina, GR-45110 Ioannina, Greece
[10] Univ Liverpool, Liverpool L69 3BX, Merseyside, England
[11] Univ Ljubljana, Jozef Stefan Inst, Ljubljana 61000, Slovenia
[12] Univ Ljubljana, Dept Phys, Ljubljana 61000, Slovenia
[13] CPPM, CNRS, IN2P3, Marseille, France
[14] Univ Aix Marseille 2, F-13284 Marseille 07, France
[15] CSNSM, CNRS, IN2P3, Orsay, France
[16] Paul Scherrer Inst, Zurich, Switzerland
[17] CE Saclay, DAPNIA, DSM, CEA, Gif Sur Yvette, France
[18] Royal Inst Technol, S-10044 Stockholm, Sweden
[19] Univ Thessaloniki, Salonika, Greece
[20] ETH Zurich, IPP, Zurich, Switzerland
来源：
PHYSICS LETTERS B | 1999年 / 456卷 / 2-4期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/S0370-2693(99)00483-9
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Data from the CPLEAR experiment, together with the most recent world averages for some of the neutral-kaon parameters, were constrained with the Bell-Steinberger (or unitarity) relation, allowing the T-violation parameter Re(epsilon) and the CPT-violation parameter Im(delta) of the neutral-kaon mixing matrix to be determined with an increased accuracy: Re(epsilon)=(164.9 +/- 2.5) x 10(-5), Im(delta)=(2.4 +/- 5.0) x 10(-5). Moreover, the constraint allows the CM-violation parameter for the neutral-kaon semileptonic decays, Re(), to be determined for the first time. The Delta S not equal Delta Q parameters Re(x_) and Im(x(+)) are given with an increased accuracy. The quantity Re(y + x_), which enters the T-violation CPLEAR asymmetry previously published, is determined to be (- 0.2 +/- 0.3) x 10(-3). The value obtained for Re(delta) is in agreement with the one resulting from a previous unconstrained fit and has a slightly smaller error. (C) 1999 Elsevier Science B.V, All rights reserved.
引用
收藏
页码：297 / 303
页数：7
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