1ST DETERMINATION OF CP VIOLATION PARAMETERS FROM K(0)-(K)BAR-0 DECAY ASYMMETRY

被引：28

作者：

ADLER, R

ALHALEL, T

ANGELOPOULOS, A

APOSTOLAKIS, A

ASLANIDES, E

BACKENSTOSS, G

BEE, CP

BENNET, J

BIENLEIN, JK

BLOCH, P

BULA, C

BURGUN, G

CARLSON, P

CARVALHO, J

CAWLEY, E

CHARALAMBOUS, S

CHARDALAS, M

CHARDIN, G

COBBAERT, H

DEDOUSSIS, S

DEJARDIN, M

DERRE, J

DODGSON, M

DOUSSE, JC

DUCLOS, J

EALET, A

ECKART, B

FARAVEL, L

FASSNACHT, P

FAURE, JL

FELDER, C

FERREIRAMARQUES, R

FETSCHER, W

FIDECARO, M

FILIPCIC, A

FRANCIS, D

FRY, JR

FUGLESANG, C

GABATHULER, E

GAMET, R

GARRETA, D

GERALIS, T

GERBER, HJ

GO, A

GUMPLINGER, P

GUYOT, C

HARRISON, PF

HAYMAN, PJ

HEYES, WG

HOLLANDER, RW

机构：

[1] CNRS, CCPM, INST NATL PHYS NUCL & PHYS PARTICULES, F-13288 MARSEILLE, FRANCE

[2] UNIV AIX MARSEILLE 2, F-13288 MARSEILLE, FRANCE

[3] UNIV ATHENS, ATHENS, GREECE

[4] CERN, CH-1211 GENEVA 23, SWITZERLAND

[5] UNIV LIVERPOOL, LIVERPOOL L69 3BX, ENGLAND

[6] SWISS FED INST TECHNOL, IMP, CH-8093 ZURICH, SWITZERLAND

[7] PAUL SCHERRER INST, CH-5232 VILLIGEN, SWITZERLAND

[8] CENS, DAPNIA, SPP, F-91191 GIF SUR YVETTE, FRANCE

[9] MSI, S-10405 STOCKHOLM, SWEDEN

[10] LIP, P-1000 LISBON, PORTUGAL

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

[12] UNIV THESSALONIKI, GR-54006 Thessaloniki, GREECE

[13] UNIV FRIBOURG, CH-1700 FRIBOURG, SWITZERLAND

[14] EDVARD KARDELJ UNIV, DEPT PHYS, 61111 LJUBLJANA, SLOVENIA

[15] EDVARD KARDELJ UNIV, J STEFAN INST, 61111 LJUBLJANA, SLOVENIA

[16] BOSTON UNIV, BOSTON, MA 02215 USA

[17] DELFT UNIV TECHNOL, DELFT, NETHERLANDS

[18] UNIV IOANNINA, GR-45110 IOANNINA, GREECE

[19] CNRS, CSNSM, INST NATL PHYS NUCL & PHYS PARTICULES, F-91405 ORSAY, FRANCE

来源：

PHYSICS LETTERS B | 1992年 / 286卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(92)90178-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first determination of CP violation parameters from particle-antiparticle asymmetry in the decay of neutral kaons into two charged pions. Observation of such an asymmetry is direct proof of CP violation. A fit to the asymmetry enabled a determination of the parameter-eta+- to be made, yielding the result \eta+-\ = [2.32 +/- 0.14 (stat. ) +/- 0.03 (syst.)] X 10(-3) and phi+- = 42.3-degrees +/- 4.4-degrees (stat.) +/- 0.4-degrees (syst. ), with an additional uncertainty of +/-1.0-degrees due to the error on the present published value of DELTA-m, the K(L)0-K(S)0 mass difference. The magnitudes of both statistical and systematic errors will be significantly reduced in the future.

引用

页码：180 / 186

页数：7

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