MEASUREMENT OF THE FORWARD BACKWARD ASYMMETRY IN Z-]BBAR AND Z-]CCBAR

被引：35

作者：

DECAMP, D ^{[1
]}

DESCHIZEAUX, B

GOY, C

LEES, JP

MINARD, MN

ALEMANY, R

CRESPO, JM

DELFINO, M

FERNANDEZ, E

GAITAN, V

GARRIDO, L

MIR, LM

PACHECO, A

CATANESI, MG

CREANZA, D

DE PALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

MAGGI, M

NATALI, S

NUZZO, S

QUATTROMINI, M

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

GAO, Y

HU, H

HUANG, D

HUANG, X

LIN, J

LOU, J

QIAO, C

RUAN, T

WANG, T

XIE, Y

XU, D

XU, R

ZHANG, J

ZHAO, W

ATWOOD, WB

BAUERDICK, LAT

BIRD, F

BLUCHER, E

BONVICINI, G

机构：

[1] CNRS, IN2P3, LAB PHYS PARTICULES, F-74019 ANNECY LE VIEUX, FRANCE

[2] UNIV AUTONOMA BARCELONA, LAB FIS ALTAS ENERGIAS, E-08193 BARCELONA, SPAIN

[3] IST NAZL FIS NUCL, SEZ BARI, I-70126 BARI, ITALY

[4] IST NAZL FIS NUCL, DIPARTIMENTO FIS UNIV, I-70126 BARI, ITALY

[5] ACAD SINICA, INST HIGH ENERGY PHYS, BEIJING, PEOPLES R CHINA

[6] CERN, EUROPEAN LAB PARTICLE PHYS, CH-1211 GENEVA 23, SWITZERLAND

[7] UNIV BLAISE PASCAL, CNRS, IN2P3, LAB PHYS CORPUSCULAIRE, F-63177 AUBIERE, FRANCE

[8] NIELS BOHR INST, DK-2100 COPENHAGEN, DENMARK

[9] NUCL RES CTR DEMOKRITOS NRCD, ATHENS, GREECE

[10] ECOLE POLYTECH, CNRS, IN2P3, LAB PHYS NUCL & HAUTES ENERGIES, F-91128 PALAISEAU, FRANCE

[11] UNIV EDINBURGH, DEPT PHYS, EDINBURGH EH9 3JZ, ENGLAND

[12] UNIV FIRENZE, DIPARTIMENTO FIS, I-50125 FLORENCE, ITALY

[13] IST NAZL FIS NUCL, SEZ FIRENZE, I-50125 FLORENCE, ITALY

[14] FLORIDA STATE UNIV, SUPERCOMP COMPUTAT RES INST, TALLAHASSEE, FL 32306 USA

[15] FLORIDA STATE UNIV, DEPT PHYS, TALLAHASSEE, FL 32306 USA

[16] IST NAZL FIS NUCL, LNF, I-00044 FRASCATI, ITALY

[17] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, LANARK, SCOTLAND

[18] UNIV HEIDELBERG, INST HOCHENERGIEPHYS, W-6900 HEIDELBERG, GERMANY

[19] IMPERIAL COLL, DEPT PHYS, LONDON SW7 2BZ, ENGLAND

[20] UNIV INNSBRUCK, INST EXPT PHYS, A-6020 INNSBRUCK, AUSTRIA

[21] UNIV LANCASTER, DEPT PHYS, LANCASTER LA1 4YB, ENGLAND

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

[23] CNRS, IN2P3, FAC SCI LUMINY, CTR PHYS PARTICULES, F-13288 MARSEILLE, FRANCE

[24] WERNER HEISENBERG INST PHYS, MAX PLANCK INST PHYS & ASTROPHYS, W-8000 MUNICH, GERMANY

[25] UNIV PARIS SUD, CNRS, IN2P3, LAB ACCELERATEUR LINEAIRE, F-91405 ORSAY, FRANCE

[26] UNIV PISA, DIPARTIMENTO FIS, INFN, SEZ PISA, I-56010 PISA, ITALY

[27] SCUOLA NORMALE SUPER, I-56010 PISA, ITALY

[28] UNIV LONDON, ROYAL HOLLOWAY & BEDFORD NEW COLL, DEPT PHYS, SURREY TW20 0EX, ENGLAND

[29] RUTHERFORD APPLETON LAB, PARTICLE PHYS DEPT, DIDCOT OX11 0QX, OXON, ENGLAND

[30] CEN SACLAY, DEPT PHYS PARTICULES ELEMENTAIRES, F-91191 GIF SUR YVETTE, FRANCE

[31] UNIV SHEFFIELD, DEPT PHYS, SHEFFIELD S3 7RH, ENGLAND

[32] UNIV SIEGEN, FACHBEREICH PHYS, W-5900 SIEGEN, GERMANY

[33] UNIV TRIESTE, DIPARTIMENTO FIS, I-34127 TRIESTE, ITALY

[34] IST NAZL FIS NUCL, SEZ TRIESTE, I-34127 TRIESTE, ITALY

[35] UNIV WISCONSIN, DEPT PHYS, MADISON, WI 53706 USA

[36] SLAC, Stanford, CA 94309 USA

[37] UNIV WASHINGTON, Seattle, WA 98195 USA

[38] LBL, Berkeley, CA 94720 USA

[39] FAC SCI, CTR PHYS PARTICULES, F-13288 MARSEILLE, FRANCE

[40] UNIV TORINO, IST FIS GEN, Turin, ITALY

[41] CNR, IST COSMO GEOFIS, I-10126 Turin, ITALY

[42] CERN, PPE DIV, CH-1211 Geneva 23, SWITZERLAND

来源：

PHYSICS LETTERS B | 1991年 / 263卷 / 02期

关键词：

D O I：

10.1016/0370-2693(91)90607-R

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

From a sample of 150 000 hadronic Z decays collected with the ALEPH detector at LEP, events containing prompt leptons are used to measure the forward-backward asymmetries for the channels Z --> bbBAR and Z --> ccBAR, giving the results A(FB)b = 0.126 +/- 0.028 +/- 0.012 and A(FB)c = 0.064 +/- 0.039 +/- 0.030. These asymmetries correspond to the value of effective electroweak mixing angle at the Z mass sin2-theta-w (m(Z)2) = 0.2262 +/- 0.0053.

引用

页码：325 / 336

页数：12

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