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 [J].

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 .

PHYSICS LETTERS B, 1989, 231 (04) :548-556

[2] MEASUREMENT OF GA AND GV, THE NEUTRAL CURRENT COUPLING-CONSTANTS TO LEPTONS [J].

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 .

PHYSICS LETTERS B, 1990, 236 (01) :109-115

[3] A SUMMARY OF EXPERIMENTAL RESULTS FROM J MARK - HIGH-ENERGY E+E- COLLISIONS AT PETRA [J].

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 .

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 [J].

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 .

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 [J].

BARDIN, DY ;

LEIKE, A ;

RIEMANN, T ;

SACHWITZ, M .

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

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