MEASUREMENT OF THE PRODUCTION-RATES OF ETA AND ETA' IN HADRONIC-Z DECAYS

被引：32

作者：

BUSKULIC, D

DECAMP, D

GOY, C

LEES, JP

MINARD, MN

MOURS, B

ALEMANY, R

ARIZTIZABAL, F

COMAS, P

CRESPO, JM

DELFINO, M

FERNANDEZ, E

GAITAN, V

GARRIDO, L

PACHECO, A

PASCUAL, A

CREANZA, D

DEPALMA, 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

WANG, T

XIE, Y

XU, D

XU, R

ZHANG, J

ZHAO, W

ATWOOD, WB

BAUERDICK, LAT

BLUCHER, E

BONVICINI, G

机构：

[1] UNIV AUTONOMA BARCELONA,INST FIS ALTES ENERGIES,E-08193 BARCELONA,SPAIN

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

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

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

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

[6] UNIV BLAISE PASCAL CLERMONT FERRAND,CNRS,INST NATL PHYS NUCL PHYS PARTICLES,F-63177 CLERMONT FERRAND,FRANCE

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

[8] DEMOCRITOS NUCL RES CTR,GR-15310 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,IST NAZL FIS NUCL,DIPARTIMENTO FIS,SEZ FIRENZE,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] UNIV GLASGOW,DEPT PHYS & ASTRON,GLASGOW G12 8QQ,SCOTLAND

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

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

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

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

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

[20] SCUOLA NORMALE SUPER PISA,I-56100 PISA,ITALY

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

[22] UNIV PARIS 11,CNRS,IST NAZL FIS NUCL,ACCELERATEUR LINEAIRE LAB,F-91405 ORSAY,FRANCE

[23] IST NAZL FIS NUCL,DIPARTIMENTO FIS,SEZ PISA,PISA,ITALY

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

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

[26] CENS,DAPNIA,SERV PHYS PARTICULES,F-91191 GIF SUR YVETTE,FRANCE

[27] UNIV CALIF SANTA CRUZ,INST PARTICLE PHYS,SANTA CRUZ,CA 95064

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

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

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

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

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

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

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

来源：

PHYSICS LETTERS B | 1992年 / 292卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(92)90633-F

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The decays eta --> gammagamma and eta' --> etapi+pi- have been observed in hadronic decays of the Z produced at LEP. The fragmentation functions of both the eta and eta' have been measured. The measured multiplicities for x > 0.1 are 0.298 +/- 0.023 +/- 0.021 and 0.068 +/- 0.018 +/- 0.016 for eta and eta' respectively. While the fragmentation function for the eta is fairly well described by the JETSET Monte Carlo, it is found that the production rate of the eta' is a factor of four less than the corresponding prediction.

引用

页码：210 / 220

页数：11

共 14 条

[1] A STUDY OF BOSE-EINSTEIN CORRELATIONS IN E+E- ANNIHILATIONS AT LEP [J].

ACTON, PD .

PHYSICS LETTERS B, 1991, 267 (01) :143-153

[2] OBSERVATION OF THE DECAY DS+-]ETA'PI+ [J].

ALBRECHT, H ;

EHRLICHMANN, H ;

GLASER, R ;

HARDER, G ;

KRUGER, A ;

NAU, A ;

NILSSON, AW ;

NIPPE, A ;

OEST, T ;

REIDENBACH, M ;

SCHAFER, M ;

SCHMIDTPARZEFALL, W ;

SCHRODER, H ;

SCHULZ, HD ;

SEFKOW, F ;

WURTH, R ;

APPUHN, RD ;

DRESCHER, A ;

HAST, C ;

HERRERA, G ;

KOLANOSKI, H ;

LANGE, A ;

LINDNER, A ;

MANKEL, R ;

SCHECK, H ;

SCHIEBER, M ;

SCHWEDA, G ;

SPAAN, B ;

WALTHER, A ;

WEGENER, D ;

PAULINI, M ;

REIM, K ;

VOLLAND, U ;

WEGENER, H ;

FUNK, W ;

STIEWE, J ;

WERNER, S ;

BALL, S ;

GABRIEL, JC ;

GEYER, C ;

HOLSCHER, A ;

HOFMANN, W ;

HOLZER, B ;

KHAN, S ;

SPENGLER, J ;

BRITTON, DI ;

CHARLESWORTH, CEK ;

EDWARDS, KW ;

KAPITZA, H ;

KRIEGER, P .

PHYSICS LETTERS B, 1990, 245 (02) :315-320

[3]

ANDERSON B, 1982, LU TP825 PREPR

[4]

BEHREND HJ, 1991, Z PHYS C PART FIELDS, V49, P401, DOI 10.1007/BF01549692

[5] RESONANCES NEED NOT DESTROY BOSE-EINSTEIN CORRELATION IN E+E- ANNIHILATION [J].

BOWLER, MG .

PHYSICS LETTERS B, 1986, 180 (03) :299-302

[6]

DAOUDI M, 1991, CLNS911108 PREPR

[7] ALEPH - A DETECTOR FOR ELECTRON-POSITRON ANNIHILATIONS AT LEP [J].

DECAMP, D ;

DESCHIZEAUX, B ;

LEES, JP ;

MINARD, MN ;

CRESPO, JM ;

DELFINO, M ;

FERNANDEZ, E ;

MARTINEZ, M ;

MIQUEL, R ;

MIR, LM ;

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 ;

JIANG, Y ;

LIN, J ;

LIU, R ;

LU, W ;

RUAN, T ;

WANG, T ;

WANG, X ;

WU, D ;

WU, W ;

XIE, Y ;

XU, D ;

XU, R ;

XU, Y ;

YAN, W ;

YE, M ;

ZHANG, J ;

ZHAO, H .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1990, 294 (1-2) :121-178

[8]

DECAMP D, 1992, CERNPPE9262 PREPR

[9]

DECAMP D, 1991, CERNPPE91183 PREPR

[10] ETA-ETA' MIXING ANGLE [J].

GILMAN, FJ ;

KAUFFMAN, R .

PHYSICAL REVIEW D, 1987, 36 (09) :2761-2767

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