A STUDY OF B(0)-(B)OVER-BAR(0) MIXING USING SEMILEPTONIC DECAYS OF B-HADRONS PRODUCED FROM Z(0)

被引：16

作者：

ABREU, P

ADAM, W

ADYE, T

AGASI, E

ALEKSAN, R

ALEKSEEV, GD

ALGERI, A

ALLEN, P

ALMEHED, S

ALVSVAAG, SJ

AMALDI, U

ANASSONTZIS, EG

ANDREAZZA, A

ANTILOGUS, P

APEL, WD

APSIMON, RJ

ARNOUD, Y

ASMAN, B

AUGUSTIN, JE

AUGUSTINUS, A

BAILLON, P

BAMBADE, P

BARAO, F

BARATE, R

BARBIELLINI, G

BARDIN, DY

BARKER, G

BARONCELLI, A

BARRING, O

BARRIO, JA

BARTL, W

BATES, MJ

BATTAGLIA, M

BAUBILLIER, M

BECKS, KH

BEESTON, CJ

BEGALLI, M

BEILLIERE, P

BELOKOPYTOV, Y

BELTRAN, P

BENEDIC, D

BENVENUTI, AC

BERGGREN, M

BERTRAND, D

BIANCHI, F

BILENKY, MS

BILLOIR, P

BJARNE, J

BLOCH, D

BLYTH, S

机构：

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

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

[3] NIKHEF H, 1009 DB AMSTERDAM, NETHERLANDS

[4] CENS, DAPNIA, DSM, F-91191 GIF SUR YVETTE, FRANCE

[5] JOINT INST NUCL RES, DUBNA, RUSSIA

[6] UNIV HELSINKI, HIGH ENERGY PHYS RES INST, SF-00170 HELSINKI 17, FINLAND

[7] IFIC, E-46100 VALENCIA, SPAIN

[8] UNIV VALENCIA, CSIC, E-46100 VALENCIA, SPAIN

[9] UNIV VALENCIA, DFAMN, E-46100 VALENCIA, SPAIN

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

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

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

[13] UNIV MILAN, DEPT FIS, I-20133 MILAN, ITALY

[14] INFN, I-20133 MILAN, ITALY

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

[16] UNIV KARLSRUHE, INST EXPTL KERNPHYS, W-7500 KARLSRUHE 1, GERMANY

[17] UNIV STOCKHOLM, INST PHYS, S-11346 STOCKHOLM, SWEDEN

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

[19] UNIV GRENOBLE 1, INST SCI NUCL, F-38026 GRENOBLE, FRANCE

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

[21] INFN, I-34127 TRIESTE, ITALY

[22] UNIV UDINE, IST FIS, I-33100 UDINE, ITALY

[23] UNIV OXFORD, NUCL PHYS LAB, OXFORD OX1 3RH, ENGLAND

[24] IST SUPER SANITA, INFN, I-00161 ROME, ITALY

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

[26] AUSTRIAN ACAD SCI, INST HOCHENERGIE PHYS, A-1050 VIENNA, AUSTRIA

[27] UNIV PARIS 06, LPNHE, F-75252 PARIS 05, FRANCE

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

[29] UNIV GESAMTHSCH WUPPERTAL, FACHBEREICH PHYS, W-5600 WUPPERTAL 1, GERMANY

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

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

[32] PROTVINO HIGH ENERGY PHYS INST, 142284 PROTVINO, RUSSIA

[33] NCSR DEMOKRITOS, INST NUCL PHYS, GR-15310 ATHENS, GREECE

[34] ULP, CTR RECH NUCL, IN2P3, CNRS, F-67037 STRASBOURG, FRANCE

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

[36] INFN, I-40126 BOLOGNA, ITALY

[37] UNIV INSTELLING ANTWERP, DEPT PHYS, B-2610 Antwerp, BELGIUM

[38] ULB, VUB, IIHE, B-1050 BRUSSELS, BELGIUM

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

[40] UNIV TURIN, DIPARTIMENTO FIS SPERIMENTALE, I-10125 TURIN, ITALY

[41] INFN, I-10125 TURIN, ITALY

[42] UNIV ROME 2, DIPARTIMENTO FIS, I-00173 ROME, ITALY

[43] UNIV LIVERPOOL, DEPT PHYS, LIVERPOOL L69 3BX, ENGLAND

[44] UNIV LJUBLJANA, J STEFAN INST, YU-61000 LJUBLJANA, SLOVENIA

[45] UNIV LJUBLJANA, DEPT PHYS, YU-61000 LJUBLJANA, SLOVENIA

[46] UNIV UPPSALA, DEPT RADIAT SCI, S-75121 UPPSALA, SWEDEN

[47] UNIV GENOA, DIPARTIMENTO FIS, I-16146 GENOA, ITALY

[48] INFN, I-16146 GENOA, ITALY

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

[50] INFN, I-35131 PADUA, ITALY

来源：

PHYSICS LETTERS B | 1993年 / 301卷 / 01期

关键词：

D O I：

10.1016/0370-2693(93)90736-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The B0-B0BAR mixing was studied by using about '50000 hadronic decays of the Z0, collected with the DELPHI detector at LEP. With 1665 dilepton events, the probability for a b quark to become a bBAR before decaying was found to be chi = 0.121(-0.040)+0.044 +/- 0.017. The semileptonic branching ratio of the b was measured from the dilepton and single lepton events and found to be Br(b --> l) = (10.0 +/- 0.7 +/- 0.7)%.

引用

页码：145 / 154

页数：10

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