PROPERTIES OF HADRONIC EVENTS IN E+E- ANNIHILATION AT SQUARE-ROOT-S=91 GEV

被引：55

作者：

DECAMP, D

DESCHIZEAUX, B

LEES, JP

MINARD, MN

CRESPO, JM

DELFINO, M

FERNANDEZ, E

MARTINEZ, M

MIQUEL, R

MIR, ML

ORTEU, S

PACHECO, A

PERLAS, JA

TUBAU, E

CATANESI, MG

DEPALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

MASTROGIACOMO, A

NATALI, S

NUZZO, S

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

CHEN, Y

HU, H

HUANG, D

LIN, J

RUAN, T

WANG, T

WU, W

XIE, Y

XU, D

XU, R

ZHANG, J

ZHAO, W

ALBRECHT, H

BIRD, F

BLUCHER, E

CHARITY, T

DREVERMANN, H

GARRIDO, L

GRAB, C

HAGELBERG, R

机构：

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

[2] UNIV BARI,DEPARTIMENTO FIS,I-70126 BARI,ITALY

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

[4] CHINESE ACAD SCI,INST HIGH ENERGY PHYS,BEIJING,PEOPLES R CHINA

[5] CERN,EUROPEAN LAB PARTICLE PHYSICS,CH-1211 GENEVA 23,SWITZERLAND

[6] UNIV CLERMONT FERRAND,PHYS CORPUSCULAIRE LAB,F-63177 CLERMONT FERRAND,FRANCE

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

[8] DEMOCRITOS NUCL RES CTR,ATHENS,GREECE

[9] ECOLE POLYTECH,CNRS,INST NATL PHYS NUCL & PHYS PARTICLES,F-91128 PALAISEAU,FRANCE

[10] UNIV EDINBURGH,DEPT PHYS,EDINBURGH EH9 3JZ,MIDLOTHIAN,SCOTLAND

[11] UNIV FLORENCE,DEPARTIMENTO FIS,IST NAZL FIS NUCL,I-50125 FLORENCE,ITALY

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

[13] FLORIDA STATE UNIV,DEPT PHYS,TALLAHASSEE,FL 32306

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

[15] UNIV TURIN,IST FIS GEN,I-10124 TURIN,ITALY

[16] CNR,IST COSMO GEOFIS,TURIN,ITALY

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

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

[19] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT PHYS,LONDON SW7 2BZ,ENGLAND

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

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

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

[23] FAC SCI LUMINY,CNRS,INST NATL PHYS NUCL & PHYS PARTICLES,CTR PHYS PARTICULES,F-13288 MARSEILLE,FRANCE

[24] MAX PLANCK INST PHYS & ASTROPHYS,WERNER HEISENBERG INST PHYS,W-8000 MUNICH 40,GERMANY

[25] UNIV PARIS 11,CNRS,INST NATL PHYS NUCL & PHYS PARTICLES,F-91405 ORSAY,FRANCE

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

[27] UNIV PISA,DEPARTIMENTO FIS,IST NAZL FIS NUCL,I-56100 PISA,ITALY

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

[29] RUTHERFORD APPLETON LAB,DIV HIGH ENERGY PHYS,DIDCOT OX11 0QX,OXON,ENGLAND

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

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

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

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

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

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

来源：

PHYSICS LETTERS B | 1990年 / 234卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(90)92030-M

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on properties of hadronic events from e+e- annihilation observed by the ALEPH detector at the large Electron Positron Collider at CERN. The center-of-mass energy was s=91.0-91.3 GeV. Measured distributions of the global event-shape variables sphericity, aplanarity, thrust and minor value, and of the inclusive variables xp, p⊥ in, p⊥ out and y are presented. We measure a mean charged multiplicity in hadronic events of 〈Nch〉=21.3±0.1 (statistical)±0.6 (systematic). The data are in good agreement with QCD-based models which use the leading-logarithm approximation, and are less well described by a model using O(αs 2) QCD. © 1990.

引用

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页码：209 / 218

页数：10

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