MEASUREMENT OF THE AVERAGE B-HADRON LIFETIME IN Z(0) DECAYS

被引：11

作者：

ACTON, PD

ALEXANDER, G

ALLISON, J

ALLPORT, PP

ANDERSON, KJ

ARCELLI, S

ASHTON, P

ASTBURY, A

AXEN, D

AZUELOS, G

BAHAN, GA

BAINES, JTM

BALL, AH

BANKS, J

BARKER, GJ

BARLOW, RJ

BATLEY, JR

BEAUDOIN, G

BECK, A

BECKER, J

BEHNKE, T

BELL, KW

BELLA, G

BERLICH, P

BETHKE, S

BIEBEL, O

BINDER, U

BLOODWORTH, IJ

BOCK, P

BODEN, B

BOSCH, HM

BOUGEROLLE, S

BRABSON, BB

BREUKER, H

BROWN, RM

BRUN, R

BUIJS, A

BURCKHART, HJ

CAPILUPPI, P

CARNEGIE, RK

CARTER, AA

CARTER, JR

CHANG, CY

CHARLTON, DG

CLARKE, PEL

COHEN, I

COLLINS, WJ

CONBOY, JE

COOPER, M

COUCH, M

机构：

[1] TEL AVIV UNIV,DEPT PHYS & ASTRON,IL-69978 TEL AVIV,ISRAEL

[2] UNIV MANCHESTER,SCHUSTER LAB,DEPT PHYS,MANCHESTER M13 9PL,LANCS,ENGLAND

[3] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

[4] UNIV CHICAGO,ENRICO FERMI INST,CHICAGO,IL 60637

[5] UNIV CHICAGO,DEPT PHYS,CHICAGO,IL 60637

[6] UNIV BOLOGNA,DIPARTMENTO FIS,I-40126 BOLOGNA,ITALY

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

[8] UNIV MONTREAL,PHYS NUCL LAB,MONTREAL H3C 3J7,QUEBEC,CANADA

[9] UNIV MARYLAND,DEPT PHYS & ASTRON,COLLEGE PK,MD 20742

[10] UNIV LONDON,QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND

[11] UNIV FREIBURG,FAK PHYS,W-7800 FREIBURG,GERMANY

[12] UNIV HAMBURG,DESY,INST EXPTL PHYS 2,W-2000 HAMBURG 52,GERMANY

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

[14] UNIV HEIDELBERG,INST PHYS,W-6900 HEIDELBERG,GERMANY

[15] UNIV BONN,INST PHYS,W-5300 BONN 1,GERMANY

[16] UNIV BIRMINGHAM,SCH PHYS & SPACE RES,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

[17] INDIANA UNIV,DEPT PHYS,BLOOMINGTON,IN 47405

[18] CERN,EUROPEAN ORG PARTICLE PHYS,CH-1211 GENEVA 23,SWITZERLAND

[19] CARLETON UNIV,DEPT PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

[20] UNIV LONDON UNIV COLL,LONDON WC1E 6BT,ENGLAND

[21] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

[22] UNIV LONDON BIRKBECK COLL,LONDON WC1E 7HV,ENGLAND

[23] CENS,DEPT PHYS PARTICULES ELEMENT,F-91191 GIF SUR YVETTE,FRANCE

[24] UNIV CALIF RIVERSIDE,DEPT PHYS,RIVERSIDE,CA 92521

[25] CARLETON UNIV,CTR RES PARTICLE PHYS,OTTAWA K1S 5B6,ONTARIO,CANADA

[26] WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL

[27] UNIV TOKYO,INT CTR ELEMENTARY PARTICLE PHYS,TOKYO 113,JAPAN

[28] UNIV TOKYO,DEPT PHYS,TOKYO 113,JAPAN

[29] KOBE UNIV,KOBE 657,JAPAN

[30] NATL RES COUNCIL CANADA,HERZBERG INST ASTROPHYS,OTTAWA K1A 0R6,ONTARIO,CANADA

[31] TRIUMF,VANCOUVER V6T 2A3,BC,CANADA

来源：

PHYSICS LETTERS B | 1992年 / 274卷 / 3-4期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0370-2693(92)92025-C

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A sample of 689 muon candidates and 665 electron candidates identified in multihadronic Z0 decays has been used to measure the average B hadron lifetime. These data were recorded with the OPAL detector during 1990. Maximum likelihood fits to the distributions of the lepton impact parameters yield an average B hadron lifetime of tau(b) = 1.37 +/- 0.07 +/- 0.06 ps, where the first error is statistical and the second systematic. This result is a weighted average over the semileptonic branching fractions and production rates of the B hadrons produced in Z0 decays.

引用

页码：513 / 525

页数：13

共 28 条

[1]

ABREU P, UNPUB Z PHYS C

[2] MEASUREMENT OF THE TAU LEPTON LIFETIME [J].

ACTON, PD ;

ALEXANDER, G ;

ALLISON, J ;

ALLPORT, PP ;

ANDERSON, KJ ;

ARCELLI, S ;

ASHTON, P ;

ASTBURY, A ;

AXEN, D ;

AZUELOS, G ;

BAHAN, GA ;

BAINES, JTM ;

BALL, AH ;

BANKS, J ;

BARKER, GJ ;

BARLOW, RJ ;

BATLEY, JR ;

BEAUDOIN, G ;

BECK, A ;

BECKER, J ;

BEHNKE, T ;

BELL, KW ;

BELLA, G ;

BERLICH, P ;

BETHKE, S ;

BIEBEL, O ;

BINDER, U ;

BLOODWORTH, IJ ;

BOCK, P ;

BODEN, B ;

BOSCH, HM ;

BOUGEROLLE, S ;

BRABSON, BB ;

BREUKER, H ;

BROWN, RM ;

BRUN, R ;

BUIJS, A ;

BURCKHART, HJ ;

CAPILUPPI, P ;

CARNEGIE, RK ;

CARTER, AA ;

CARTER, JR ;

CHANG, CY ;

CHARLTON, DG ;

CLARKE, PEL ;

COHEN, I ;

COLLINS, WJ ;

CONBOY, JE ;

COOPER, M ;

COUCH, M .

PHYSICS LETTERS B, 1991, 273 (03) :355-366

[3] XI-, XI-, LAMBDA-PRODUCTION AND LAMBDA-BAR-PRODUCTION IN SULFUR-TUNGSTEN INTERACTIONS AT 200 GEV/C PER NUCLEON [J].

ABATZIS, S ;

ANTINORI, F ;

BARNES, RP ;

BENAYOUN, M ;

BEUSCH, W ;

BLOODWORTH, IJ ;

BRAVAR, A ;

CARNEY, JN ;

DELACRUZ, B ;

DIBARI, D ;

DUFEY, JP ;

EVANS, D ;

FINI, R ;

FRENCH, BR ;

GHIDINI, B ;

GIRONE, M ;

HELSTRUP, H ;

HOLME, AK ;

JACHOLKOWSKI, A ;

KAHANE, J ;

KINSON, JB ;

KIRK, A ;

KNUDSON, K ;

LASSALLE, JC ;

LENTI, V ;

LERUSTE, P ;

FRANCES, LL ;

LOCONSOLE, RA ;

MALAMANT, A ;

MANZARI, V ;

NAVACH, F ;

NARJOUX, JL ;

PALANO, A ;

PENZO, A ;

QUERCIGH, E ;

ROSSI, L ;

SAFARIK, K ;

SENE, M ;

SENE, R ;

TAMAZOUZT, M ;

TRAINOR, MT ;

VASSILIADIS, G ;

BAILLIE, OV ;

VOLTE, A ;

VOTRUBA, MF .

PHYSICS LETTERS B, 1991, 270 (01) :123-127

[4]

AHMET K, 1991, NUCL INSTRUM METH A, V305, P275

[5]

AKRAWY MZ, 1990, Z PHYS C PART FIELDS, V47, P505

[6] A STUDY OF JET PRODUCTION-RATES AND A TEST OF QCD ON THE Z0 RESONANCE [J].

AKRAWY, MZ ;

ALEXANDER, G ;

ALLISON, J ;

ALLPORT, PP ;

ANDERSON, KJ ;

ARMITAGE, JC ;

ARNISON, GTJ ;

ASHTON, P ;

AZUELOS, G ;

BAINES, JTM ;

BALL, AH ;

BANKS, J ;

BARKER, GJ ;

BARLOW, RJ ;

BATLEY, JR ;

BAVARIA, G ;

BEARD, C ;

BECK, F ;

BELL, KW ;

BELLA, G ;

BETHKE, S ;

BIEBEL, O ;

BLOODWORTH, IJ ;

BOCK, P ;

BOERNER, H ;

BREUKER, H ;

BROWN, RM ;

BRUN, R ;

BUIJS, A ;

BURCKHART, HJ ;

CAPILUPPI, P ;

CARNEGIE, RK ;

CARTER, AA ;

CARTER, JR ;

CHANG, CY ;

CHARLTON, DG ;

CHRIN, JTM ;

COHEN, I ;

CONBOY, JE ;

COUCH, M ;

COUPLAND, M ;

CUFFIANI, M ;

DADO, S ;

DALLAVALLE, GM ;

DAVIES, OW ;

DENINNO, MM ;

DIECKMANN, A ;

DITTMAR, M ;

DIXIT, MS ;

DUCHESNEAU, D .

PHYSICS LETTERS B, 1990, 235 (3-4) :389-398

[7] A STUDY OF HEAVY FLAVOR PRODUCTION USING MUONS IN HADRONIC Z0 DECAYS [J].

AKRAWY, MZ .

PHYSICS LETTERS B, 1991, 263 (02) :311-324

[8] MEASUREMENT OF THE Z0 LINE-SHAPE PARAMETERS AND THE ELECTROWEAK COUPLINGS OF CHARGED LEPTONS [J].

ALEXANDER, G .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1991, 52 (02) :175-207

[9] AN APPLICATION OF THE GEANT3 GEOMETRY PACKAGE TO THE DESCRIPTION OF THE OPAL DETECTOR [J].

ALLISON, J ;

BRUN, R ;

BRUYANT, F ;

BULLOCK, FW ;

CHANG, CY ;

DUMONT, JJ ;

HATTERSLEY, P ;

HEMINGWAY, RJ ;

HOBSON, PR ;

HOCHMAN, D ;

KAWAMOTO, T ;

LORAZO, B ;

MALLET, J ;

MCPHERSON, AC ;

ONEALE, SW ;

PATRICK, G ;

POSSOZ, A ;

ROSSI, A ;

WARD, DR ;

WARD, CP ;

ZANARINI, P .

COMPUTER PHYSICS COMMUNICATIONS, 1987, 47 (01) :55-74

[10] DETERMINATION OF THE LIFETIME OF BOTTOM HADRONS [J].

ASH, WW ;

BAND, HR ;

BLOOM, ED ;

BOSMAN, M ;

CAMPORESI, T ;

CHADWICK, GB ;

DELFINO, MC ;

DESANGRO, R ;

FORD, WT ;

GETTNER, MW ;

GODERRE, GP ;

GODFREY, GL ;

GROOM, DE ;

HURST, RB ;

JOHNSON, JR ;

LAU, KH ;

LAVINE, TL ;

LEEDY, RE ;

LIPPI, I ;

MARUYAMA, T ;

MESSNER, RL ;

MOROMISATO, JH ;

MOSS, LJ ;

MULLER, F ;

NELSON, HN ;

PERUZZI, I ;

PICCOLO, M ;

PREPOST, R ;

PYRLIK, J ;

QI, N ;

READ, AL ;

RITSON, DM ;

ROSENBERG, LJ ;

SHAMBROOM, WD ;

SLEEMAN, JC ;

SMITH, JG ;

VENUTI, JP ;

VERDINI, PG ;

VONGOELER, E ;

WALD, HB ;

WEINSTEIN, R ;

WISER, DE ;

ZDARKO, RW .

PHYSICAL REVIEW LETTERS, 1987, 58 (07) :640-643

← 1 2 3 →