CPLEAR results on the CP parameters of neutral kaons decaying to pi(+)pi(-)pi(0)

被引：25

作者：

Adler, R

Angelopoulos, A

Apostolakis, A

Aslanides, E

Backenstoss, G

Bargassa, P

Bee, CP

Behnke, O

Benelli, A

Bertin, V

Blanc, F

Bloch, P

Carlson, P

Carroll, M

Carvalho, J

Cawley, E

Charalambous, S

Chardin, G

Chertok, MB

Cody, A

Danielsson, M

Dejardin, M

Derre, J

Ealet, A

Eckart, B

Eleftheriadis, C

Evangelou, I

Faravel, L

Fassnacht, P

Felder, C

FerreiraMarques, R

Fetscher, W

Fidecaro, M

Filipcic, A

Francis, D

Fry, J

Gabathuler, E

Gamet, R

Garreta, D

Gerber, HJ

Go, A

Guyot, C

Haselden, A

Hayman, PJ

HenryCouannier, F

Hollander, RW

Hubert, E

JonAnd, K

Kettle, PR

Kochowski, C

机构：

[1] UNIV ATHENS,GR-10679 ATHENS,GREECE

[2] BOSTON UNIV,BOSTON,MA 02215

[3] CERN,GENEVA,SWITZERLAND

[4] UNIV COIMBRA,P-3000 COIMBRA,PORTUGAL

[5] LIP,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,CSNSM,F-91405 ORSAY,FRANCE

[15] PAUL SCHERRER INST,VILLIGEN,SWITZERLAND

[16] CE SACLAY,CEA,DSM,DAPNIA,GIF SUR YVETTE,FRANCE

[17] KTH,STOCKHOLM,SWEDEN

[18] UNIV THESSALONIKI,THESSALONIKI,GREECE

[19] ETH,IPP,ZURICH,SWITZERLAND

来源：

PHYSICS LETTERS B | 1997年 / 407卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(97)00757-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The CPLEAR experiment measured time-dependent decay-rate asymmetries of K-0 and (K) over bar(0) decaying to pi(+)pi(-)pi(0) in order to study the interference between the decay amplitudes of K-S(0) - either CP-violating or CP-conserving - and the CP-conserving K-L(0) decay amplitude. From the analysis of the complete data set we find for the CP-violating parameter eta(+-0), Re((+-0)) = (-2 +/- 7 stat. (+4)(-1) syst.) x 10(-3), Im(eta(+-0)) = (-2 +/- 9 stat. (+2)(-1) syst.) x 10(-3) and for the CP-conserving parameter lambda, Re(lambda) = (+28 +/- 7 stat. +/-3 syst.) x 10(-3), Im(lambda) = (-10 +/- 8 stat. +/- 2 syst.) x 10(-3). From the latter, the branching ratio of the CP-conserving (KS)-S-0 --> pi(+)pi(-)pi(0) decay is deduced to be B = (2.5(-1.0)(+1.3) stat. (+0.5)(-0.6) systs.) x 10(-7). (C) 1997 Elsevier Science B.V.

引用

页码：193 / 200

页数：8

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