EVIDENCE FOR B(S)(0) MESON PRODUCTION IN Z(0) DECAYS

被引:40
作者
ABREU, P
ADAM, W
ADYE, T
AGASI, E
ALEKSEEV, GD
ALGERI, A
ALLEN, P
ALMEHED, S
ALVSVAAG, SJ
AMALDI, U
ANASSONTZIS, EG
ANDREAZZA, A
ANTILOGUS, P
APEL, WD
APSIMON, RJ
ASMAN, B
AUGUSTIN, JE
AUGUSTINUS, A
BAILLON, P
BAMBADE, P
BARAO, F
BARATE, R
BARBIELLINI, G
BARDIN, DY
BARONCELLI, A
BARRING, O
BARRIO, JA
BARTL, W
BATES, MJ
BATTAGLIA, M
BAUBILLIER, M
BECKS, KH
BEESTON, CJ
BEGALLI, M
BEILLIERE, P
BELOKOPYTOV, Y
BELOUS, K
BELTRAN, P
BENEDIC, D
BENVENUTI, AC
BERGGREN, M
BERTRAND, D
BIANCHI, F
BILENKY, MS
BILLOIR, P
BJARNE, J
BLOCH, D
BLYTH, S
BOCCI, V
BOGOLUBOV, PN
机构
[1] AUSTRIAN ACAD SCI, INST HOCHENERGIEPHYS, A-1050 VIENNA, AUSTRIA
[2] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND
[3] NATL INST NUCL PHYS & HIGH ENERGY PHYS, 1009 DB AMSTERDAM, NETHERLANDS
[4] JOINT INST NUCL RES, MOSCOW 101000, USSR
[5] SEFT, HIGH ENERGY PHYS RES INST, SF-00170 HELSINKI, FINLAND
[6] UNIV LUND, DEPT PHYS, S-22363 LUND, SWEDEN
[7] UNIV BERGEN, DEPT PHYS, N-5007 BERGEN, NORWAY
[8] CERN, CH-1211 GENEVA 23, SWITZERLAND
[9] UNIV ATHENS, PHYS LAB, GR-10680 ATHENS, GREECE
[10] UNIV MILAN, DIPARTIMENTO FIS, I-20133 MILAN, ITALY
[11] UNIV GRENOBLE 1, INST SCI NUCL, F-38026 GRENOBLE, FRANCE
[12] UNIV UDINE, IST FIS, I-33100 UDINE, ITALY
[13] IST NAZL FIS NUCL, IST SUPER SANITA, I-00161 ROME, ITALY
[14] UNIV COMPLUTENSE, E-28040 MADRID, SPAIN
[15] UNIV OXFORD, NUCL PHYS LAB, OXFORD OX1 3RH, ENGLAND
[16] UNIV PARIS 07, F-75230 PARIS 05, FRANCE
[17] PONTIFICIA UNIV CATOLICA RIO DE JANEIRO, DEPT FIS, BR-22453 RIO DE JANEIRO, BRAZIL
[18] INST HIGH ENERGY PHYS, PROTVINO, USSR
[19] NCSR DEMOKRITOS, INST NUCL PHYS, GR-15310 ATHENS, GREECE
[20] UNIV ROME 2, DIPARTIMENTO FIS, I-00173 ROME, ITALY
[21] UNIV GENOA, DIPARTIMENTO FIS, I-16146 GENOA, ITALY
[22] UNIV OSLO, DEPT PHYS, N-1000 OSLO 3, NORWAY
[23] UNIV SANTANDER, FAC CIENCIAS, E-39005 SANTANDER, SPAIN
[24] NIELS BOHR INST, DK-2100 COPENHAGEN 0, DENMARK
[25] INST NUCL STUDIES, PL-00681 WARSAW, POLAND
[26] NATL TECH UNIV ATHENS, DEPT PHYS, GR-15773 ATHENS, GREECE
[27] UNIV MARSEILLE 2, F-13288 MARSEILLE 09, FRANCE
[28] INST JOZEF STEFAN, LJUBLJANA, SLOVENIA
[29] INST NUCL PHYS, HIGH ENERGY PHYS, PL-30055 KRAKOW 30, POLAND
[30] CTR BRASILEIRO PESQUISAS FIS, BR-22290 RIO DE JANEIRO, BRAZIL
[31] IFIC, VALENCIA, SPAIN
[32] UNIV VALENCIA, CSIC, E-46100 BURJASSOT, SPAIN
[33] UNIV VALENCIA, DFAM, E-46100 BURJASSOT, SPAIN
[34] INFN, I-20133 MILAN, ITALY
[35] UNIV LYON 1, F-69622 VILLEURBANNE, FRANCE
[36] UNIV KARLSRUHE, INST EXPTL KERNPHYS, W-7500 KARLSRUHE 1, GERMANY
[37] UNIV STOCKHOLM, INST PHYS, S-11346 STOCKHOLM, SWEDEN
[38] UNIV PARIS 11, ACCELERATEUR LINEAIRE, F-91405 ORSAY, FRANCE
[39] UNIV TRIESTE, DIPARTIMENTO FIS, I-34127 TRIESTE, ITALY
[40] IST NAZL FIS NUCL, I-34127 TRIESTE, ITALY
[41] UNIV PARIS 06, LPNHE, F-75230 PARIS 05, FRANCE
[42] UNIV GESAMTHSCH WUPPERTAL, FACHBEREICH PHYS, W-5600 WUPPERTAL 1, GERMANY
[43] COLL FRANCE, PHYS CORPUSCULAIRE LAB, F-75231 PARIS 05, FRANCE
[44] UNIV LOUIS PASTEUR, INST NATL PHYS NUCL & PHYS PARTICLES, CTR RECH NUCL, CNRS, F-67037 STRASBOURG, FRANCE
[45] UNIV BOLOGNA, DIPARTIMENTO FIS, I-40126 BOLOGNA, ITALY
[46] IST NAZL FIS NUCL, I-40126 BOLOGNA, ITALY
[47] UNIV INSTELLING ANTWERP, DEPT PHYS, B-2610 Antwerp, BELGIUM
[48] VRIJE UNIV BRUSSELS, UNIV LIBRE BRUXELLES, IIHE, B-1050 BRUSSELS, BELGIUM
[49] UNIV ETAT MONS, FAC SCI, B-7000 MONS, BELGIUM
[50] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, I-10125 TURIN, ITALY
关键词
D O I
10.1016/0370-2693(92)91385-M
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Seven unambiguous events out of a sample of 270 000 Z0 decays, contain in tile same jet a D(s) meson and a muon at large transverse momentum relative to the et axis. These events are direct evidence for B(s)0 meson production in hadronic Z0 decays. The production rate of these events, relative to all hadronic Z0 decays is ( 18 +/- 8) x 10(-5) this number including the relevant branching fractions of the B(s)0 and D(s). The value of the B(s)0 meson lifetime relative to the average B meson lifetime is measured to be 0.8 +/- 0.4.
引用
收藏
页码:199 / 210
页数:12
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