MEASUREMENT OF THE STRONG COUPLING-CONSTANT ALPHA-S FOR BOTTOM QUARKS AT THE Z(0) RESONANCE

被引：35

作者：

ADEVA, B

ADRIANI, O

AGUILARBENITEZ, M

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

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

BECKER, U

BEHNER, F

BEHRENS, J

BEINGESSNER, S

BENCZE, GL

BERDUGO, J

BERGES, P

BERTUCCI, B

BETEV, BL

BILAND, A

BILEI, GM

BIZZARRI, R

BLAISING, JJ

BLOMEKE, P

BLUMENFELD, B

BOBBINK, GJ

BOCCIOLINI, M

BOCK, R

BOHM, A

机构：

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

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

[3] NORTHEASTERN UNIV,BOSTON,MA 02115

[4] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

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

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

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

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

[9] MIT,CAMBRIDGE,MA 02139

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

[11] CENT LAB AUTOMAT & INSTRUMENTAT,SOFIA,BULGARIA

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

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

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

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

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

[17] UNIV MICHIGAN,ANN ARBOR,MI 48109

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

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

[20] UNIV ALABAMA,UNIVERSITY,AL 35486

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

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

[23] PRINCETON UNIV,PRINCETON,NJ 08544

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

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

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

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

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

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

[30] CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213

[31] PURDUE UNIV,W LAFAYETTE,IN 47907

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

[33] HIGH ENERGY PHYS GRP,TAIPEI,TAIWAN

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

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

[36] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550

[37] OAK RIDGE NATL LAB,OAK RIDGE,TN 37830

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

[39] PAUL SCHERRER INST,WURENLINGEN,SWITZERLAND

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

[41] INST HOCHENERGIEPHYS,O-1615 ZEUTHEN BERLIN,GERMANY

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

[43] CALTECH,PASADENA,CA 91125

[44] UNIV CALIF LOS ALAMOS SCI LAB,LOS ALAMOS,NM 87544

[45] HARVARD UNIV,CAMBRIDGE,MA 02139

[46] UNION UNIV UNION COLL,SCHENECTADY,NY 12308

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

来源：

PHYSICS LETTERS B | 1991年 / 271卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(91)90118-A

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the ratio of the strong coupling constants alpha(s) for bottom quarks and light quarks at the Z0 resonance, in order to test the flavour independence of the strong interaction. The coupling strength alpha(s) has been determined from the fraction of events with three jets, measured for a sample of all hadronic events, and for inclusive muon and electron events. The b purity is evaluated to be 22% for the first data set and 87% for the inclusive lepton sample. We find alpha(s)(b)/alpha(s)(udsc) = 1.00 +/-0.05 (stat.) +/- 0.06 (syst.).

引用

页码：461 / 467

页数：7

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