A determination of the CPT violation parameter Re(δ) from the semileptonic decay of strangeness-tagged neutral kaons

被引：70

作者：

Angelopoulos, A ^{[1
]}

Apostolakis, A

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

Faravel, L

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

机构：

[1] Univ Athens, GR-10679 Athens, Greece

[2] Univ Basel, Basel, Switzerland

[3] Boston Univ, Boston, MA 02215 USA

[4] CERN, Geneva, Switzerland

[5] Univ Coimbra, P-3000 Coimbra, Portugal

[6] Delft Univ Technol, NL-2600 AA Delft, Netherlands

[7] Univ Fribourg, CH-1700 Fribourg, Switzerland

[8] Univ Ioannina, GR-45110 Ioannina, Greece

[9] Univ Liverpool, Liverpool L69 3BX, Merseyside, England

[10] Univ Ljubljana, Jozef Stefan Inst, Ljubljana 61000, Slovenia

[11] Univ Ljubljana, Dept Phys, Ljubljana 61000, Slovenia

[12] Univ Aix Marseille 2, F-13284 Marseille 07, France

[13] IN2P3, CSNSM, CNRS, Orsay, France

[14] Paul Scherrer Inst, Villigen, Switzerland

[15] CE Saclay, DAPNIA, DSM, CEA, Gif Sur Yvette, France

[16] Royal Inst Technol, S-10044 Stockholm, Sweden

[17] ETH Zurich, IPP, Zurich, Switzerland

来源：

PHYSICS LETTERS B | 1998年 / 444卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(98)01357-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have improved by two orders of magnitude the Limit currently available for the CPT violation parameter Re(delta). To this purpose we have analyzed the full sample of neutral-kaon decays to e pi nu recorded in the CPLEAR experiment, where the strangeness of the neutral kaons was tagged at production and decay time. An appropriate function of the measured decay rates, including information from the analysis of pi(+)pi(-) decay channel, gives directly Re(delta). The result Re(delta) = (3.0 +/- 3.3(stat) +/- 0.6(syst)) X 10(-4) is compatible with zero. Values for the parameters Im(delta), Re(x(-)) and Im(x(+)) were also obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：52 / 60

页数：9

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