MEASUREMENT OF THE B(S)O LIFETIME

被引：32

作者：

BUSKULIC, D

DEBONIS, I

DECAMP, D

GHEZ, P

GOY, C

LEES, JP

MINARD, MN

ODIER, P

PIETRZYK, B

ARIZTIZABAL, F

COMAS, P

CRESPO, JM

EFTHYMIOPOULOS, I

FERNANDEZ, E

FERNANDEZBOSMAN, M

GAITAN, V

GARRIDO, L

MARTINEZ, M

MATTISON, T

ORTEU, S

PACHECO, A

PADILLA, C

PASCUAL, A

CREANZA, D

DEPALMA, M

FARILLA, A

IASELLI, G

MAGGI, G

MARINELLI, N

NATALI, S

NUZZO, S

RANIERI, A

RASO, G

ROMANO, F

RUGGIERI, F

SELVAGGI, G

SILVESTRIS, L

TEMPESTA, P

ZITO, G

CHAI, Y

HU, H

HUANG, D

HUANG, X

LIN, J

WANG, T

XIE, Y

XU, D

XU, R

ZHANG, J

ZHANG, L

机构：

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

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

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

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

[5] UNIV CLERMONT FERRAND, CNRS, IN2P3, PHYS CORPUSCULAIRE LAB, F-63177 CLERMONT FERRAND, FRANCE

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

[7] NRCD, ATHENS, GREECE

[8] ECOLE POLYTECH, CNRS, IN2P3, PHYS NUCL & HAUTES ENERGIES LAB, F-91128 PALAISEAU, FRANCE

[9] UNIV EDINBURGH, DEPT PHYS, EDINBURGH EH9 3JZ, MIDLOTHIAN, SCOTLAND

[10] UNIV FLORENCE, DIPARTIMENTO FIS, INFN, I-50125 FLORENCE, ITALY

[11] FLORIDA STATE UNIV, SUPERCOMP COMPUTAT RES INST, TALLAHASSEE, FL 32306 USA

[12] INFN, LNF, I-00044 FRASCATI, ITALY

[13] UNIV GLASGOW, DEPT PHYS & ASTRON, GLASGOW G12 8QQ, SCOTLAND

[14] UNIV HEIDELBERG, INST HOCHENERGIEPHYS, D-69120 HEIDELBERG, GERMANY

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

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

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

[18] UNIV MAINZ, INST PHYS, D-55099 MAINZ, GERMANY

[19] FAC SCI LUMINY, CTR PHYS PARTICULES, CNRS, IN2P3, F-13288 MARSEILLE, FRANCE

[20] MAX PLANCK INST PHYS & ASTROPHYS, D-80805 MUNICH, GERMANY

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

[22] INFN, PISA, ITALY

[23] UNIV PISA, DIPARTIMENTO FIS, I-56100 PISA, ITALY

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

[25] UNIV LONDON, ROYAL HOLLOWAY & BEDFORD NEW COLL, DEPT PHYS, EGHAM TW20 OEX, SURREY, ENGLAND

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

[27] CE SACLAY, DAPNIA, SERV PHYS PARTICULES, F-91191 GIF SUR YVETTE, FRANCE

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

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

[30] UNIV SIEGEN, FACHBEREICH PHYS, D-57068 SIEGEN, GERMANY

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

[32] INFN, I-34127 TRIESTE, ITALY

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

[34] UNIV WASHINGTON, SEATTLE, WA 98195 USA

[35] UNIV TURIN, IST FIS GEN, I-10124 TURIN, ITALY

[36] CNR, IST COSMOGEOFIS, TURIN, ITALY

[37] KANGNUNG NATL UNIV, KANGNUNG, SOUTH KOREA

[38] UNIV SASSARI, IST MATEMAT & FIS, I-07100 SASSARI, ITALY

[39] UNIV BARCELONA, DEPT ESTRUCTURA & CONSTITUENS MAT, E-08208 BARCELONA, SPAIN

来源：

PHYSICS LETTERS B | 1994年 / 322卷 / 03期

关键词：

D O I：

10.1016/0370-2693(94)91120-7

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The lifetime of the B(s)0 has been measured in a data sample of 889 000 hadronic events recorded with the ALEPH detector at LEP. After background subtraction 30.8 +/- 6.9 events are attributed to the semileptonic decay of the B(S)0 to a D(S)- and an opposite-sign lepton. A maximum-likelihood fit to the distribution of the proper times of these events yields a B(s)0 lifetime of tau(B)s = 1.92 (-0.35)+0.45 +/- 0.04 ps.

引用

页码：275 / 286

页数：12

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