A NEW MEASUREMENT OF DIRECT CP VIOLATION IN THE NEUTRAL KAON SYSTEM

被引：328

作者：

BARR, GD

BUCHHOLZ, P

CAROSI, R

COWARD, D

CUNDY, D

DOBLE, N

GATIGNON, L

GIBSON, V

GRAFSTROM, P

HAGELBERG, R

VANDERLANS, J

NELSON, HN

WAHL, H

PEACH, KJ

BLUMER, H

HEINZ, R

KLEINKNECHT, K

MAYER, P

PANZER, B

RENK, B

ROHRER, H

SANDER, HG

WAGNER, A

AUGE, E

FOURNIER, D

HEUSSE, P

ICONOMIDOUFAYARD, L

HARRUS, I

PERDEREAU, O

SCHAFFER, AC

SERIN, L

BERTANZA, L

BIGI, A

CALAFIURA, P

CALVETTI, M

CARROZZA, MC

CASALI, R

CERRI, C

FANTECHI, R

MANNELLI, IG

MARZULLI, VM

NAPPI, A

PIERAZZINI, G

HOLDER, M

KREUTZ, A

QUAST, G

ROST, M

WERTHENBACH, R

ZECH, G

机构：

[1] UNIV EDINBURGH,DEPT PHYS,EDINBURGH EH8 9YL,MIDLOTHIAN,SCOTLAND

[2] UNIV MAINZ,INST PHYS,W-6500 MAINZ,GERMANY

[3] UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,CNRS,F-91405 ORSAY,FRANCE

[4] INFN PISA,DIPARTIMENTO FIS & SEZ,PISA,ITALY

[5] UNIV GESAMTHSCH SIEGEN,FACHBEREICH PHYS,W-5900 SIEGEN 21,GERMANY

来源：

PHYSICS LETTERS B | 1993年 / 317卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(93)91599-I

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A new measurement of the ratio of the CP-violating amplitudes for K(L) --> 2pi0 and K(L) --> pi+pi- is reported. The measured value for R = \eta00/eta+-\2 is 0.9878 +/- 0.0026 +/- 0.0030, where the first error is the statistical uncertainty and the second is the estimate of the systematic uncertainty. This gives a value for the parameter describing direct CP violation: Re epsilon'/epsilon = (2.0 +/- 0.7) X 10(-3).

引用

页码：233 / 242

页数：10

共 10 条

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