J/PSI-PRODUCTION IN THE HADRONIC DECAYS OF THE Z
文献类型：期刊论文
| 作者 | ABREU, P; ADAM, W; ADYE, T; AGASI, E; AJINENKO, I; ALEKSAN, R; ALEKSEEV, GD; ALLPORT, PP; ALMEHED, S; ALMEIDA, FML |
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1994 |
| 卷号 | 341期号:1页码:109-122 |
| 通讯作者 | IOWA STATE UNIV SCI & TECHNOL,AMES LAB,AMES,IA 50011 ; IOWA STATE UNIV SCI & TECHNOL,DEPT PHYS,AMES,IA 50011 ; UNIV INSTELLING ANTWERP,DEPT PHYS,B-2610 WILRIJK,BELGIUM ; FREE UNIV BRUSSELS,IIHE,B-1050 BRUSSELS,BELGIUM ; UNIV MONS,FAC SCI,B-7000 MONS,BELGIUM ; UNIV ATHENS,PHYS LAB,GR-10680 ATHENS,GREECE ; UNIV BERGEN,DEPT PHYS,N-5007 BERGEN,NORWAY ; UNIV BOLOGNA,DIPARTMENTO FIS,I-40126 BOLOGNA,ITALY ; IST NAZL FIS NUCL,I-40126 BOLOGNA,ITALY ; CERN,CH-1211 GENEVA 23,SWITZERLAND ; NATL CTR SCI RES DEMOKRITOS,INST NUCL PHYS,GR-15310 ATHENS,GREECE ; FZU,CAS,DIV HIGH ENERGY PHYS,INST PHYS,CR-18040 PRAGUE 8,CZECH REPUBLIC ; UNIV GENOA,DIPARTIMENTO FIS,I-16146 GENOA,ITALY ; IST NAZL FIS NUCL,I-16146 GENOA,ITALY ; SEFT,HIGH ENERGY PHYS RES INST,SF-00014 HELSINKI,FINLAND ; JOINT INST NUCL RES,DUBNA 101000,RUSSIA ; UNIV KARLSRUHE,INST EXPTL KERNPHYS,D-76128 KARLSRUHE,GERMANY ; INST NUCL PHYS,HIGH ENERGY PHYS LAB,PL-30055 KRAKOW 30,POLAND ; CTR BRASILEIRO PESQUISAS FIS,BR-22290 RIO JANEIRO,BRAZIL ; UNIV LANCASTER,SCH PHYS & MAT,LANCASTER LA1 4YB,ENGLAND ; UNIV LIVERPOOL,DEPT PHYS,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND ; UNIV PARIS 06,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE ; LUND UNIV,DEPT PHYS,S-22363 LUND,SWEDEN ; UNIV COMPLUTENSE MADRID,E-28040 MADRID,SPAIN ; UNIV MILAN,DIPARTIMENTO FIS,I-20133 MILAN,ITALY ; IST NAZL FIS NUCL,I-20133 MILAN,ITALY ; NIELS BOHR INST,DK-2100 COPENHAGEN 0,DENMARK ; CHARLES UNIV,NUCL CTR MFF,NC,CR-18000 PRAGUE 8,CZECH REPUBLIC ; NIKHEF H,1009 DB AMSTERDAM,NETHERLANDS ; NATL TECH UNIV ATHENS,DEPT PHYS,GR-15773 ATHENS,GREECE ; UNIV OSLO,DEPT PHYS,OSLO 3,NORWAY ; UNIV OVIEDO,DEPT FIS,E-33006 OVIEDO,SPAIN ; UNIV OXFORD,DEPT PHYS,OXFORD OX1 3RH,ENGLAND ; UNIV PADUA,DIPARTIMENTO FIS,I-35131 PADUA,ITALY ; IST NAZL FIS NUCL,I-35131 PADUA,ITALY ; PONTIFICIA UNIV CATOLICA RIO DE JANEIRO,DEPT FIS,BR-22453 RIO JANEIRO,BRAZIL ; RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND ; UNIV ROMA TOR VERGATA,DIPARTIMENTO FIS,I-00173 ROME,ITALY ; IST NAZL FIS NUCL,I-00173 ROME,ITALY ; CEA SACLAY,DSM,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE ; IST NAZL FIS NUCL,IST SUPER SANITA,I-00161 ROME,ITALY ; UNIV CANTABRIA,CSIC,CEAFM,E-39006 SANTANDER,SPAIN ; INST HIGH ENERGY PHYS,PROTVINO,RUSSIA ; UNIV LJUBLJANA,JOZEF STEFAN INST,LJUBLJANA 61000,SLOVENIA ; UNIV LJUBLJANA,DEPT PHYS,LJUBLJANA 61000,SLOVENIA ; UNIV STOCKHOLM,S-11385 STOCKHOLM,SWEDEN ; UNIV TURIN,DIPARTIMENTO FIS SPERIMENTALE,I-10125 TURIN,ITALY ; IST NAZL FIS NUCL,I-10125 TURIN,ITALY ; UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY ; IST NAZL FIS NUCL,I-34127 TRIESTE,ITALY ; UNIV UDINE,IST FIS,I-33100 UDINE,ITALY ; FED UNIV RIO DE JANEIRO,BR-21945970 RIO JANEIRO,BRAZIL ; UNIV UPPSALA,DEPT RADIAT SCI,S-75121 UPPSALA,SWEDEN ; UNIV VALENCIA,DFAMN,E-46100 BURJASSOT,SPAIN ; UNIV VALENCIA,CSIC,IFIC,E-46100 BURJASSOT,SPAIN ; OSTERR AKAD WISSENSCH,INST HOCHENERGIEPHYS,A-1050 VIENNA,AUSTRIA ; UNIV WARSAW,PL-00681 WARSAW,POLAND ; INST NUCL STUDIES,PL-00681 WARSAW,POLAND ; UNIV GESAMTHSCH WUPPERTAL,FACHBEREICH PHYS,D-42097 WUPPERTAL 1,GERMANY ; COLL FRANCE,PHYS CORPUSCULAIRE LAB,CNRS,IN2P3,F-75231 PARIS 05,FRANCE ; UNIV STRASBOURG 1,CTR RECH NUCL,CNRS,IN2P3,F-67037 STRASBOURG,FRANCE ; UNIV GRENOBLE 1,INST SCI NUCL,CNRS,IN2P3,F-38026 ST MARTIN DHERES,FRANCE ; UNIV PARIS 11,ACCELERATEUR LINEAIRE LAB,CNRS,IN2P3,F-91405 ORSAY,FRANCE ; UNIV PARIS 06,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE ; UNIV PARIS 07,LPNHE,CNRS,IN2P3,F-75252 PARIS 05,FRANCE ; UNIV LYON 1,IPNL,CNRS,IN2P3,F-69622 VILLEURBANNE,FRANCE ; UNIV AIX MARSEILLE 1,CPP,CNRS,IN2P3,F-13288 MARSEILLE 09,FRANCE |
| 英文摘要 | J/psi mesons have been reconstructed from their decay to mu(+)mu(-) and e(+)e(-), using the data collected by the DELPHI experiment during 1991 and 1992 at the LEP collider. From about 1 million hadronic Z decays 153 +/- 17 J/psi were found, 5.4 +/- 2.3 psi' were obtained in the channel J/psi(--> mu(+)mu(-))pi(+)pi(-) and 6.4 +/- 2.7 chi(c) in the channel J/psi(--> mu(+)mu(-))gamma. As the dominant source of J/psi mesons is from b quarks, the following branching ratios: Br(b-->J/psi X) = (1.12 +/- 0.12 (stat.) +/- 0.10 (syst.))%, Br(b --> psi' X) = (0.48 +/- 0.22 (stat.) +/- 0.10 (syst.))%, Br(b-->chi(cl) X) = (1.4 +/- 0.6 (stat.)(-0.2)(+0.4) (syst.))% were measured. From the proper time distribution of the J/psi sample, the average lifetime of b-hadrons decaying into J/psi was found to be: tau(B) = 1.50(-0.21)(+0.24) (stat.) +/- 0.03 (syst.) ps. A search for completely reconstructed B meson decays to final states including a J/psi gave a signal of 15 +/- 5 events. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:A1994PY03800015 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236818]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ABREU, P,ADAM, W,ADYE, T,et al. J/PSI-PRODUCTION IN THE HADRONIC DECAYS OF THE Z[J]. PHYSICS LETTERS B,1994,341(1):109-122. |
| APA | ABREU, P.,ADAM, W.,ADYE, T.,AGASI, E.,AJINENKO, I.,...&ZUMERLE, G.(1994).J/PSI-PRODUCTION IN THE HADRONIC DECAYS OF THE Z.PHYSICS LETTERS B,341(1),109-122. |
| MLA | ABREU, P,et al."J/PSI-PRODUCTION IN THE HADRONIC DECAYS OF THE Z".PHYSICS LETTERS B 341.1(1994):109-122. |
入库方式： OAI收割
来源：高能物理研究所
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