MEASUREMENT OF DELTA(++)(1232) PRODUCTION IN HADRONIC-Z-DECAYS

被引：18

作者：

ABREU, P

ADAM, W

ADYE, T

AGASI, E

AJINENKO, I

ALEKSAN, R

ALEKSEEV, GD

ALLPORT, PP

ALMEHED, S

ALVSVAAG, SJ

AMALDI, U

AMATO, S

ANDREAZZA, A

ANDRIEUX, ML

ANTILOGUS, P

ANYKEYEV, V

APEL, WD

ARNOUD, Y

ASMAN, B

AUGUSTIN, JE

AUGUSTINUS, A

BAILLON, P

BAMBADE, P

BARAO, F

BARATE, R

BARDIN, DY

BARKER, GJ

BARONCELLI, A

BARRING, O

BARRIO, JA

BARTL, W

BATES, MJ

BATTAGLIA, M

BAUBILLIER, M

BAUDOT, J

BECKS, KH

BEGALLI, M

BEILLIERE, P

BELOKOPYTOV, Y

BENVENUTI, AC

BERGGREN, M

BERTRAND, D

BIANCHI, F

BIGI, M

BILENKY, MS

BILLOIR, P

BLOCH, D

BLUME, M

BLYTH, S

BOCCI, V

机构：

[1] IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011

[2] IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011

[3] UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM

[4] FREE UNIV BRUSSELS,IIHE,B-1050 BRUSSELS,BELGIUM

[5] UNIV ETAT MONS,FAC SCI,B-7000 MONS,BELGIUM

[6] UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE

[7] UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY

[8] UNIV BOLOGNA,DIPARTIMENTO FIS,I-40126 BOLOGNA,ITALY

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

[10] CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL

[11] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL

[12] UNIV ESTADUAL RIO DE JANEIRO,INST FIS,RIO JANEIRO,BRAZIL

[13] COMENIUS UNIV BRATISLAVA,FAC MATH & PHYS,BRATISLAVA 84215,SLOVAKIA

[14] COLL FRANCE,PHYS CORPUSCULAIRE LAB,CNRS,IN2P3,F-75231 PARIS 05,FRANCE

[15] CERN,CH-1211 GENEVA 23,SWITZERLAND

[16] UNIV STRASBOURG 1,CTR RECH NUCL,CNRS,IN2P3,F-67037 STRASBOURG,FRANCE

[17] NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE

[18] ACAD SCI CZECH REPUBL,INST PHYS,FZU,DIV HIGH ENERGY PHYS,CR-18040 PRAGUE 8,CZECH REPUBLIC

[19] UNIV GENEVA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY

[20] IST NAZL FIS NUCL,I-16146 GENOA,ITALY

[21] UNIV GRENOBLE 1,INST SCI NUCL,CNRS,IN2P3,F-38026 GRENOBLE,FRANCE

[22] SEFT,HIGH ENERGY PHYS RES INST,SF-00014 HELSINKI,FINLAND

[23] JOINT INST NUCL RES,MOSCOW 101000,RUSSIA

[24] UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY

[25] INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND

[26] UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,CNRS,IN2P3,F-91405 ORSAY,FRANCE

[27] UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND

[28] UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND

[29] UNIV PARIS 06,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE

[30] UNIV PARIS 07,F-75252 PARIS 05,FRANCE

[31] LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN

[32] UNIV LYON 1,IPNL,CNRS,IN2P3,F-69622 VILLEURBANNE,FRANCE

[33] UNIV COMPLUTENSE MADRID,E-28040 MADRID,SPAIN

[34] UNIV AIX MARSEILLE 2,CPP,CNRS,IN2P3,F-13288 MARSEILLE 09,FRANCE

[35] UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY

[36] IST NAZL FIS NUCL,I-20133 MILAN,ITALY

[37] NIELS BOHR INST,DK-2100 COPENHAGEN 0,DENMARK

[38] CHARLES UNIV,MFF,CTR NUCL,CR-18000 PRAGUE 8,CZECH REPUBLIC

[39] NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS

[40] NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE

[41] UNIV OSLO,DEPT PHYS,N-1000 OSLO 3,NORWAY

[42] UNIV OVIEDO,DEPT FIS,E-33006 OVIEDO,SPAIN

[43] UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND

[44] UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY

[45] IST NAZL FIS NUCL,I-35131 PADUA,ITALY

[46] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[47] IST NAZL FIS NUCL,I-00173 ROME,ITALY

[48] UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY

[49] CTR ETUD SACLAY,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE

[50] IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY

来源：

PHYSICS LETTERS B | 1995年 / 361卷 / 1-4期

关键词：

D O I：

10.1016/0370-2693(95)01176-Q

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A measurement of the Delta(++)(1232) inclusive production in hadronic decays of the Z at LEP is presented, based on 1.3 million hadronic events collected by the DELPHI detector in the 1994 LEP running period. The DELPHI ring imaging Cherenkov counters are used for identifying hadrons. The average Delta(++)(1232) multiplicity per hadronic event is 0.079 +/- 0.015 which is more than a factor of two below the JETSET, HERWIG and UCLA model predictions. It agrees with a recently proposed universal mass dependence of particle production rates in e(+)e(-) annihilations.

引用

页码：207 / 220

页数：14