MEASUREMENT OF Z0 DECAYS TO HADRONS, AND A PRECISE DETERMINATION OF THE NUMBER OF NEUTRINO SPECIES

被引：76

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

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

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

[4] JOHNS HOPKINS UNIV,BALTIMORE,MD 21218

[5] IST NAZL FIS NUCL,SEZ NAPOLI,I-80125 NAPLES,ITALY

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

[7] NORTHEASTERN UNIV,BOSTON,MA 02115

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

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

[10] MIT,CAMBRIDGE,MA 02139

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

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

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

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

[15] UNIV MICHIGAN,ANN ARBOR,MI 48109

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

[17] IST NAZL FIS NUCL,SEZ ROMA,I-00185 ROME,ITALY

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

[19] PRINCETON UNIV,PRINCETON,NJ 08544

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

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

[22] LAB PHYS PARTICLES,F-74519 ANNECY LE VIEUX,FRANCE

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

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

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

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

[27] NIKHEF NIJMEGEN,6525 ED NIJMEGEN,NETHERLANDS

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

[29] PAUL SCHERRER INST,WURENLINGEN,SWITZERLAND

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

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

[32] CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213

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

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

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

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

[37] CALTECH,PASADENA,CA 91125

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

[39] HARVARD UNIV,CAMBRIDGE,MA 02138

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

来源：

PHYSICS LETTERS B | 1990年 / 237卷 / 01期

关键词：

D O I：

10.1016/0370-2693(90)90476-M

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have made a precise measurement of the cross section for e+e-→Z0→hadrons with the L3 detector at LEP, covering the s range from 88.28 to 95.04 GeV. From a fit to the Z0 mass, total width, and the hadronic cross section to be MZ 0=91.160 ± 0.024 (experiment) ±0.030(LEP) GeV, ΓZ 0=2.539±0.054 GeV, and σh(MZ 0)=29.5±0.7 nb. We also used the fit to the Z0 peak cross section and the width todetermine Γinvisible=0.548±0.029 GeV, which corresponds to 3.29±0.17 species of light neutrinos. The possibility of four or more neutrino flavors is thus ruled out at the 4σ confidence level. © 1990.

引用

页码：136 / 146

页数：11

共 29 条

[1] STUDY OF INTERMITTENCY IN ELECTRON POSITRON-ANNIHILATION INTO HADRONS
BRAUNSCHWEIG, W
GERHARDS, R
KIRSCHFINK, FJ
MARTYN, HU
FISCHER, HM
HARTMANN, H
HARTMANN, J
HILGER, E
JOCKSCH, A
WEDEMEYER, R
FOSTER, B
MARTIN, AJ
BERNARDI, E
CHWASTOWSKI, J
ESKREYS, A
GENSER, K
HULTSCHIG, H
JOOS, P
KOWALSKI, H
LADAGE, A
LOHR, B
LUKE, D
NOTZ, D
PAWLAK, JM
POSNECKER, KU
ROS, E
TRINES, D
WALCZAK, R
WOLF, G
KOLANOSKI, H
KRACHT, T
KRUGER, J
LOHRMANN, E
POELZ, G
ZEUNER, W
BINNIE, D
HASSARD, J
SHULMAN, J
SU, D
TOMALIN, I
BARREIRO, F
LEITES, A
DELPESO, J
BURROWS, PN
HEATH, GP
VEITCH, ME
HART, JC
SAXON, DH
BRANDT, S
HOLDER, M
[J]. PHYSICS LETTERS B, 1989, 231 (04) : 548 - 556
[2] MEASUREMENT OF GA AND GV, THE NEUTRAL CURRENT COUPLING-CONSTANTS TO LEPTONS
ADEVA, B
ADRIANI, O
AGUILARBENITEZ, M
AKBARI, H
ALCARAZ, J
ALOISIO, A
ALVERSON, G
ALVIGGI, MG
AN, Q
ANDERHUB, H
ANDERSSON, AL
ANDREEV, VP
ANGELOV, T
ANTONOV, L
ANTREASYAN, D
AREFIEV, A
AUROY, B
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
[J]. PHYSICS LETTERS B, 1990, 236 (01) : 109 - 115
[3] A SUMMARY OF EXPERIMENTAL RESULTS FROM J MARK - HIGH-ENERGY E+E- COLLISIONS AT PETRA
ADEVA, B
BARBER, DP
BECKER, U
BERDUGO, J
BOHM, A
BRANSON, JG
BURGER, JD
CAPELL, M
CERRADA, M
CHEN, HS
CHEN, M
CHEN, ML
CHEN, MY
CHU, YS
CLARE, R
DEFFUR, E
DEMARTEAU, M
DUINKER, P
FESEFELDT, HS
FONG, D
FUKUSHIMA, M
HAN, RD
HARTING, D
HEBBEKER, T
HERTEN, G
HO, MC
HUSSAIN, M
ILYAS, MM
JIANG, DZ
KRENZ, W
KUIJER, P
LI, QZ
LUCKEY, D
LUIT, EJ
MANA, C
MARQUINA, MA
MASSARO, GGG
MOUNT, R
NADEEM, K
NEWMAN, H
POHL, M
POSCHMANN, FP
RAU, RR
RODRIGUEZ, S
ROHDE, M
RUBIO, JA
RYKACZEWSKI, H
SALICIO, J
SCHULZ, I
STONE, H
[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1984, 109 (3-4): : 131 - 226
[4] A DETERMINATION OF THE PROPERTIES OF THE NEUTRAL INTERMEDIATE VECTOR BOSON Z0
ADEVA, B
ADRIANI, O
AGUILARBENITEZ, M
AKBARI, H
ALCARAZ, J
ALOISIO, A
ALVIGGI, MG
AN, Q
ANDERHUB, H
ANDERSSON, AL
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
BENCZE, G
BERDUGO, J
BERGES, P
BERTUCCI, B
BETEV, BL
BILAND, A
BIZZARRI, R
BLAISING, JJ
BLOMEKE, P
BOBBINK, GJ
BOCCIOLINI, M
BOHLEN, W
BOHM, A
BOHRINGER, T
BORGIA, B
BOURILKOV, D
BOURQUIN, M
BOUTIGNY, D
BRANSON, JG
BROCK, IC
BRUYANT, F
BURGER, JD
BURQ, JP
[J]. PHYSICS LETTERS B, 1989, 231 (04) : 509 - 518
[5] ADEVA B, IN PRESS NUCL INSTRU
[6] Barber D. P., 1980, PHYS REP, V63, P337
[7] ENERGY-DEPENDENT WIDTH EFFECTS IN E+E--ANNIHILATION NEAR THE Z-BOSON POLE
BARDIN, DY
LEIKE, A
RIEMANN, T
SACHWITZ, M
[J]. PHYSICS LETTERS B, 1988, 206 (03) : 539 - 542
[8] BARDIN DY, 1989, Z PHYSICS LEP
[9] BORELLI A, CERNTH544189 PREPR
[10] BRUN R, 1987, CERNDDEE841 REP

← 1 2 3 →