A STUDY OF HEAVY FLAVOR PRODUCTION USING MUONS IN HADRONIC Z0 DECAYS

被引：56

作者：

AKRAWY, MZ

机构：

[1] Queen Mary and Westfield College, University of London, London

[2] Department of Physics and Astronomy, Tel Aviv University, Tel Aviv

[3] Department of Physics, Schuster Laboratory, The University, Manchester

[4] Cavendish Laboratory, Cambridge

[5] Enrico Fermi Institute, Department of Physics, University of Chicago, Chicago

[6] Department of Physics, Carleton University, Ottawa, Ont. K1S 5B6, Colonel By Drive

[7] Laboratoire de Physique Nucléaire, Université de Montréal, Montreal

[8] Department of Physics and Astronomy, University of Maryland, College Park

[9] Fakultät für Physik, Albert Ludwigs Universität

[10] CERN, European Organisation for Particle Physics

[11] Rutherford Appleton Laboratory, Chilton, Didcot

[12] Physikalisches Institut, Universität Heidelberg

[13] Physikalisches Institut, Universität Bonn

[14] School of Physics and Space Research, University of Birmingham, Birmingham

[15] Department of Physics, Indiana University, Bloomington, IN 47405

[16] Dipartimento di Fisica dell' Università di Bologna, INFN

[17] Brunel University, Uxbridge

[18] University College London, London

[19] Department of Physics, Technion - Israel Institute of Technology, Haifa

[20] Birkbeck College, London

[21] DPhPE, CEN-Saclay

[22] Department of Physics, University of California, Riverside

[23] Centre for Research in Particle Physics, Carleton University, Ottawa

[24] Nuclear Physics Department, Weizmann Institute of Science, Rehovot

[25] International Center for Elementary Particle Physics, Department of Physics, University of Tokyo, Tokyo

[26] Kobe University, Kobe

[27] National Research Council of Canada, Herzberg Institute of Astrophysics, Ottawa

来源：

PHYSICS LETTERS B | 1991年 / 263卷 / 02期

关键词：

D O I：

10.1016/0370-2693(91)90606-Q

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using muon candidates in 133 000 hadronic decays of the Z0, recorded by the OPAL detector at LEP, we have measured the fraction of events containing semi-leptonic decays of b flavoured hadrons. An analysis based on fitting the shape of the momentum and transverse momentum distributions of the muon candidates gave the result: (GAMMA-(Z0 --> bbBAR)/(GAMMA-(Z0 --> hadrons)) x br (b --> mu) = 0.0226 +/- 0.0007 +/- 0.0013, and also yielded: (GAMMA-(Z0 --> ccBAR)/GAMMA-(Z0 --> hadrons)) x Br(c --> mu) = 0.0176 +/- 0.0025 +/- 0.0042. Using the charge of the muon and the angle of the event thrust axis with respect to the electron beam, in a b-enriched event sample, we measured the forward-backward asymmetry for Z0 --> bbBAR decays. Without correction for B0BBAR0 mixing, the asymmetry was found to be A(b)FB = 0.072 +/- 0.042 +/- 0.010.

引用

页码：311 / 324

页数：14

共 50 条

[31] A SEARCH FOR LEPTON FLAVOR VIOLATION IN Z0 DECAYS
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
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
BOCCI, V
BOGOLUBOV, PN
PHYSICS LETTERS B, 1993, 298 (1-2) : 247 - 256
[32] FLAVOR-CHANGING DECAYS OF THE Z0 AND LEPTOQUARKS
DONCHESKI, MA
GROTCH, H
ROBINETT, RW
SCHILCHER, K
BELANGER, G
MOXHAY, P
PHYSICAL REVIEW D, 1989, 40 (07): : 2301 - 2304
[33] FLAVOR CHANGING DECAYS OF Z0 IN SUPERSYMMETRIC MODELS
GAMBERINI, G
RIDOLFI, G
NUCLEAR PHYSICS B, 1987, 287 (02) : 304 - 316
[34] A study of parton fragmentation in hadronic Z0 decays using Λ(Λ)over-bar correlations
Abbiendi, G
Ackerstaff, K
Alexander, G
Allison, J
Altekamp, N
Anderson, KJ
Anderson, S
Arcelli, S
Asai, S
Ashby, SF
Axen, D
Azuelos, G
Ball, AH
Barberio, E
Barlow, RJ
Bartoldus, R
Batley, JR
Baumann, S
Bechtluft, J
Behnke, T
Bell, KW
Bella, G
Bellerive, A
Bentvelsen, S
Bethke, S
Betts, S
Biebel, O
Biguzzi, A
Bird, SD
Blobel, V
Bloodworth, IJ
Bobinski, M
Bock, P
Böhme, J
Bonacorsi, D
Boutemeur, M
Braibant, S
Bright-Thomas, P
Brigliadori, L
Brown, RM
Burckhart, HJ
Burgard, C
Bürgin, R
Capiluppi, P
Carnegie, RK
Carter, AA
Carter, JR
Chang, CY
Charlton, DG
Chrisman, D
EUROPEAN PHYSICAL JOURNAL C, 2000, 13 (02): : 185 - 195
[35] Spin effects and the production of heavy baryons in z0 boson decays
Saleev V.A.
Russian Physics Journal, 1999, 42 (2) : 203 - 213
[36] Evidence for an excess of soft photons in hadronic decays of Z0
Abdallah, J.
Abreu, P.
Adam, W.
Adzic, P.
Albrecht, T.
Alderweireld, T.
Alemany-Fernandez, R.
Allmendinger, T.
Allport, P. P.
Amaldi, U.
Amapane, N.
Amato, S.
Anashkin, E.
Andreazza, A.
Andringa, S.
Anjos, N.
Antilogus, P.
Apel, W-D.
Arnoud, Y.
Ask, S.
Asman, B.
Augustin, J. E.
Augustinus, A.
Baillon, P.
Ballestrero, A.
Bambade, P.
Barbier, R.
Bardin, D.
Barker, G. J.
Baroncelli, A.
Battaglia, M.
Baubillier, M.
Becks, K-H.
Begalli, M.
Behrmann, A.
Ben-Haim, E.
Benekos, N.
Benvenuti, A.
Berat, C.
Berggren, M.
Berntzon, L.
Bertrand, D.
Besancon, M.
Besson, N.
Bloch, D.
Blom, M.
Bluj, M.
Bonesini, M.
Boonekamp, M.
Booth, P. S. L.
EUROPEAN PHYSICAL JOURNAL C, 2006, 47 (02): : 273 - 294
[37] Evidence for an excess of soft photons in hadronic decays of Z0
J. Abdallah
P. Abreu
W. Adam
P. Adzic
T. Albrecht
T. Alderweireld
R. Alemany-Fernandez
T. Allmendinger
P.P. Allport
U. Amaldi
N. Amapane
S. Amato
E. Anashkin
A. Andreazza
S. Andringa
N. Anjos
P. Antilogus
W-D. Apel
Y. Arnoud
S. Ask
B. Asman
J.E. Augustin
A. Augustinus
P. Baillon
A. Ballestrero
P. Bambade
R. Barbier
D. Bardin
G.J. Barker
A. Baroncelli
M. Battaglia
M. Baubillier
K-H. Becks
M. Begalli
A. Behrmann
E. Ben-Haim
N. Benekos
A. Benvenuti
C. Berat
M. Berggren
L. Berntzon
D. Bertrand
M. Besancon
N. Besson
D. Bloch
M. Blom
M. Bluj
M. Bonesini
M. Boonekamp
P.S.L. Booth
The European Physical Journal C - Particles and Fields, 2006, 47 : 273 - 294
[38] A SEARCH FOR THE TOP AND B' QUARKS IN HADRONIC Z0 DECAYS
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, 236 (03) : 364 - 374
[39] A STUDY OF 2-PARTICLE MOMENTUM CORRELATIONS IN HADRONIC Z0 DECAYS
ACTON, PD
ALEXANDER, G
ALLISON, J
ALLPORT, PP
ANDERSON, KJ
ARCELLI, S
ASTBURY, A
AXEN, D
AZUELOS, G
BAHAN, GA
BAINES, JTM
BALL, AH
BANKS, J
BARKER, GJ
BARLOW, RJ
BARNETT, S
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
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
COUPLAND, M
PHYSICS LETTERS B, 1992, 287 (04) : 401 - 412
[40] A study of spin alignment of ρ(770)± and ω(782) mesons in hadronic Z0 decays
Abbiendi, G
Ackerstaff, K
Alexander, G
Allison, J
Altekamp, N
Anderson, KJ
Anderson, S
Arcelli, S
Asai, S
Ashby, SF
Axen, D
Azuelos, G
Ball, AH
Barberio, E
Barlow, RJ
Batley, JR
Baumann, S
Bechtluft, J
Behnke, T
Bell, KW
Bella, G
Bellerive, A
Bentvelsen, S
Bethke, S
Betts, S
Biebel, O
Biguzzi, A
Bloodworth, IJ
Bock, P
Böhme, J
Bonacorsi, D
Boutemeur, M
Braibant, S
Bright-Thomas, P
Brigliadori, L
Brown, RM
Burckhart, HJ
Capiluppi, P
Carnegie, RK
Carter, AA
Carter, JR
Chang, CY
Charlton, DG
Chrisman, D
Ciocca, C
Clarke, PEL
Clay, E
Cohen, I
Conboy, JE
Cooke, OC
EUROPEAN PHYSICAL JOURNAL C, 2000, 16 (01): : 61 - 70

← 1 2 3 4 5 →