MEASUREMENT OF THE E+E- -] B(B)OVER-BAR AND E+E- -] C(C)OVER-BAR FORWARD BACKWARD ASYMMETRIES AT THE Z0 RESONANCE

被引：34

作者：

ADRIANI, O

AGUILARBENITEZ, M

AHLEN, S

AKBARI, H

ALCARAZ, J

ALOISIO, A

ALVERSON, G

ALVIGGI, MG

AMBROSI, G

AN, Q

ANDERHUB, H

ANDERSON, AL

ANDREEV, VP

ANGELOV, T

ANTONOV, L

ANTREASYAN, D

ARCE, P

AREFIEV, A

ATAMANCHUK, A

AZEMOON, T

AZIZ, T

BABA, PVKS

BAGNAIA, P

BAKKEN, JA

BAKSAY, L

BALL, RC

BANERJEE, S

BAO, J

BARILLERE, R

BARONE, L

BATTISTON, R

BAY, A

BECATTINI, F

BECKER, U

BEHNER, F

BEHRENS, J

BEINGESSNER, S

BENCZE, GL

BERDUGO, J

BERGES, P

BERTUCCI, B

BETEV, BL

BIASINI, M

BILAND, A

BILEI, GM

BIZZARRI, R

BLAISING, JJ

BLUMENFELD, B

BOBBINK, GJ

BOCCIOLINI, M

机构：

[1] UNIV FLORENCE, I-50125 FLORENCE, ITALY

[2] CTR INVEST ENERGET MEDIOAMBIENTALES & TECNOL, E-28040 MADRID, SPAIN

[3] BOSTON UNIV, BOSTON, MA 02215 USA

[4] JOHNS HOPKINS UNIV HOSP, BALTIMORE, MD 21218 USA

[5] CERRO TOLOLO INTERAMER OBSERV, EUROPEAN LAB PARTICLE PHYS, LA SERENA, CHILE

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

[7] NAPLES UNIV, I-80125 NAPLES, ITALY

[8] NORTHEASTERN UNIV, BOSTON, MA 02115 USA

[9] IST NAZL FIS NUCL, I-06100 PERUGIA, ITALY

[10] UNIV PERUGIA, I-06100 PERUGIA, ITALY

[11] WORLD LAB, FBLJA PROJECT, CH-1211 GENEVA 23, SWITZERLAND

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

[13] MIT, CAMBRIDGE, MA 02139 USA

[14] ST PETERSBURG NUCL PHYS INST, ST PETERSBURG, USSR

[15] BULGARIAN ACAD SCI, BU-1113 SOFIA, BULGARIA

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

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

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

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

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

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

[22] IST NAZL FIS NUCL, I-00185 ROME, ITALY

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

[24] PRINCETON UNIV, PRINCETON, NJ 08544 USA

[25] UNIV ALABAMA, UNIVERSITY, AL 35486 USA

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

[27] LAB PHYS PARTICULES, F-74941 ANNECY LE VIEUX, FRANCE

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

[29] NATL INST HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS

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

[31] NIKHEF NIJMEGEN, 6525 ED NIJMEGEN, NETHERLANDS

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

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

[34] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87544 USA

[35] UNIV LYON 1, INST PHYS NUCL LYON, CNRS, IN2P3, F-69622 VILLEURBANNE, FRANCE

[36] PURDUE UNIV, W LAFAYETTE, IN 47907 USA

[37] LAWRENCE LIVERMORE NATL LAB, LIVERMORE, CA 94550 USA

[38] INST HIGH ENERGY, BEIJING, PEOPLES R CHINA

[39] HIGH ENERGY PHYS GRP, TAIPEI, TAIWAN

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

[41] OAK RIDGE NATL LAB, OAK RIDGE, TN 37831 USA

[42] UNIV SANTIAGO, DEPT FIS PARTICULES ELEMENTALES, E-15706 SANTIAGO, SPAIN

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

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

[45] DESY, INST HOCHENERGIEPHYS, O-1615 ZEUTHEN, GERMANY

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

[47] CALTECH, PASADENA, CA 91125 USA

[48] HARVARD UNIV, CAMBRIDGE, MA 02139 USA

[49] UNIV CYPRUS, DEPT NAT SCI, NICOSIA, CYPRUS

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

来源：

PHYSICS LETTERS B | 1992年 / 292卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)91203-L

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the forward-backward asymmetry in e+e- --> bbBAR and e+e- --> ccBAR processes using hadronic events containing muons or electrons. The data sample corresponds to 410 000 hadronic decays of the Z0. From a fit to the single lepton and dilepton p and p(T) spectra, we determine A(bbBAR) = 0.086+/-0.015+/-0.007 and A(ccBAR) = 0.083+/-0.038+/-0.027 at the effective center-of-mass energy square root s = 91.24 GeV. These measurements yield a value of the electroweak mixing angle sin2theta(W)BAR = 0.2336+/-0.0029.

引用

页码：454 / 462

页数：9

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