Search for CP violation in the decay of tagged (K)over-bar0 and K0 to π0π0π0

被引：34

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, J

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, CH-4003 Basel, Switzerland

[3] CERN, Geneva, Switzerland

[4] LIP, Coimbra, Portugal

[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] CNRS, IN2P3, CPPM, Marseille, France

[14] CNRS, IN2P3, CPPM, F-91405 Orsay, France

[15] Paul Scherrer Inst, Villigen, Switzerland

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

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

[18] Univ Thessaloniki, Salonika, Greece

[19] ETH Zurich, IPP, Zurich, Switzerland

[20] Boston Univ, Boston, MA 02215 USA

来源：

PHYSICS LETTERS B | 1998年 / 425卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(98)00256-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The CPLEAR experiment measured the eigentime-dependent asymmetry in the rates of initially tagged (K) over bar(o) and K-o decaying to pi(o) pi(o) pi(o) in order to study the interference between the CP-violating K-S and the CP-conserving K-L decay amplitudes. Without assuming CPT invariance, we obtain for the CP-violation parameter eta(ooo) the values Re(eta(ooo))= 0.18 +/- 0.14(stat.) +/- 0.06(syst.) and Im(eta(ooo)) = 0.15 +/- 0.20(stat) +/- 0.03(syst:) Requiring Re(eta(ooo)) to be equal to Re(epsilon) we obtain Im(eta(ooo)) = -0.05 +/- 0.12(stat.) +/- 0.05(syst:) The corresponding upper limit for the branching ratio of the K-S --> pi(o) pi(o) pi(o) decay is deduced to be BKs --> pi o pi o pi o <1.9 x 10(-5) at the 90% confidence level. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：391 / 398

页数：8

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