A MEASUREMENT OF THE Z0 LEPTONIC PARTIAL WIDTHS AND THE VECTOR AND AXIAL-VECTOR COUPLING-CONSTANTS

被引：30

作者：

ADEVA, B

ADRIANI, O

AGUILARBENITEZ, M

AKBARI, H

ALCARAZ, J

ALOISIO, A

ALVERSON, G

ALVIGGI, MG

AN, Q

ANDERHUB, H

ANDERSON, AL

ANDREEV, VP

ANGELOV, T

ANTONOV, L

ANTREASYAN, D

AREFIEV, A

AZEMOON, T

AZIZ, T

BABA, PVKS

BAGNAIA, P

BAKKEN, JA

BAKSAY, L

BALL, RC

BANERJEE, S

BAO, J

BARONE, L

BAY, A

BECKER, U

BEINGESSNER, S

BENCZE, GL

BERDUGO, J

BERGES, P

BERTUCCI, B

BETEV, BL

BILAND, A

BIZZARRI, R

BLAISING, JJ

BLOMEKE, P

BLUMENFELD, B

BOBBINK, GJ

BOCCIOLINI, M

BOHLEN, W

BOHM, A

BOHRINGER, T

BORGIA, B

BOURILKOV, D

BOURQUIN, M

BOUTIGNY, D

BRANSON, JG

BROCK, IC

机构：

[1] UNIV FLORENCE, IST NAZL FIS NUCL, I-50125 FLORENCE, ITALY

[2] CTR INVEST ENERGET MEDIOAMBIENTALES & TECNOL, MADRID, SPAIN

[3] JOHNS HOPKINS UNIV, BALTIMORE, MD 21218 USA

[4] IST NAZL FIS NUCL, I-80125 NAPLES, ITALY

[5] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[6] FBLJA PROJECT, WORLD LAB, CH-1211 GENEVA, SWITZERLAND

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

[8] MIT, CAMBRIDGE, MA 02139 USA

[9] LENINGRAD NUCL PHYS INST, GATCHINA 188350, USSR

[10] CLANP, CENT LAB AUTOMAT & INSTRUMENTAT, SOFIA, BULGARIA

[11] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY

[12] INST THEORET & EXPTL PHYS, MOSCOW 117259, USSR

[13] UNIV MICHIGAN, ANN ARBOR, MI 48109 USA

[14] TATA INST FUNDAMENTAL RES, BOMBAY 400005, INDIA

[15] IST NAZL FIS NUCL, ROME, ITALY

[16] UNIV ROME LA SAPIENZA, I-00185 ROME, ITALY

[17] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[18] UNION UNIV UNION COLL, SCHENECTADY, NY 12308 USA

[19] UNIV GENEVA, CH-1211 GENEVA 4, SWITZERLAND

[20] LAB ANNECY LE VIEUX PHYS PARTICULES, PHYS PARTICULES LAB, F-74519 ANNECY LE VIEUX, FRANCE

[21] HUNGARIAN ACAD SCI, CENT RES INST PHYS, H-1525 BUDAPEST 114, HUNGARY

[22] RHEIN WESTFAL TH AACHEN, INST PHYS 1, W-5100 AACHEN, GERMANY

[23] RHEIN WESTFAL TH AACHEN, INST PHYS 3, W-5100 AACHEN, GERMANY

[24] NATL INST NUCL PHYS & HIGH ENERGY PHYS, NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

[25] NATL INST KERNPHYS & HIGH ENERGY PHYS 4, NIJMEGEN, NETHERLANDS

[26] CATHOLIC UNIV NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

[27] PAUL SCHERRER INST, WURENLINGEN, SWITZERLAND

[28] UNIV LAUSANNE, CH-1015 LAUSANNE, SWITZERLAND

[29] UNIV CALIF SAN DIEGO, SAN DIEGO, CA 92182 USA

[30] CARNEGIE MELLON UNIV, PITTSBURGH, PA 15213 USA

[31] UNIV LYON 1, CNRS, INST NATL PHS NUCL & PHYS PARTICULES, INST PHYS NUCL LYON, F-69622 VILLEURBANNE, FRANCE

[32] INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA

[33] CHINESE UNIV SCI & TECHNOL, HEFEI 230029, PEOPLES R CHINA

[34] HIGH ENERGY PHYS INST, O-1615 BERLIN, GERMANY

[35] CALTECH, PASADENA, CA 91125 USA

[36] SHANGHAI INST CERAM, SHANGHAI, PEOPLES R CHINA

[37] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[38] UNIV HAMBURG, W-2000 HAMBURG 13, GERMANY

来源：

PHYSICS LETTERS B | 1990年 / 238卷 / 01期

关键词：

D O I：

10.1016/0370-2693(90)92111-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the partial widths of the Z0 into lepton pairs, and the forward-backward charge asymmetry for the process e+e-→μ+μ- using the L3 detector at LEP. We obtain an average Γℓℓ of 83.0±2.1±1.1 MeV.From this result and the asymmetry measurement, we extract the values of the vector and axial vector couplings of the Z0 to leptons: grmv=-0.066-0.027 +0.046 and grmA= -0.495-0.007 +0.007. © 1990.

引用

页码：122 / 130

页数：9

共 36 条

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