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

页码：297 / 303

页数：7

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