MEASUREMENTS OF B(0)-(B)OVER-BAR(0) MIXING, GAMMA(Z(0)-]B(B)OVER-BAR)/GAMMA(Z(0)-]HADRONS) AND SEMILEPTONIC BRANCHING RATIOS FOR B-FLAVORED HADRONS IN HADRONIC Z(0) DECAYS

被引：0

作者：

AKERS, R

ALEXANDER, G

ALLISON, J

ANDERSON, KJ

ARCELLI, S

ASTBURY, A

AXEN, D

AZUELOS, G

BAINES, JTM

BALL, AH

BANKS, J

BARLOW, RJ

BARNETT, S

BARTOLDUS, R

BATLEY, JR

BEAUDOIN, G

BECK, A

BECK, GA

BECKER, J

BEESTON, C

BEHNKE, T

BELL, KW

BELLA, G

BENTKOWSKI, P

BERLICH, P

BETHKE, S

BIEBEL, O

BLOODWORTH, IJ

BOCK, P

BODEN, B

BOSCH, HM

BOUTEMEUR, M

BREUKER, H

BRIGHTTHOMAS, P

BROWN, RM

BUIJS, A

BURCKHART, HJ

BURGARD, C

CAPILUPPI, P

CARNEGIE, RK

CARTER, AA

CARTER, JR

CHANG, CY

CHARLTON, DG

CHU, SL

CLARKE, PEL

CLAYTON, JC

COHEN, I

CONBOY, JE

COOPER, M

机构：

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

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

[3] INFN,I-40126 BOLOGNA,ITALY

[4] UNIV BONN,INST PHYS,D-53115 BONN,GERMANY

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

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

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

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

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

[10] UNIV CHICAGO,JAMES FRANCK INST,CHICAGO,IL 60637

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

[12] ALBERT LUDWIGS UNIV,FAK PHYS,D-79104 FREIBURG,GERMANY

[13] UNIV HEILDELBERG,INST PHYS,D-69120 HEIDELBERG,GERMANY

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

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

[16] BIRBECK COLL,LONDON WC1E 7HV,ENGLAND

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

[18] UNIV MARYLAND,DEPT PHYS,COLL PK,MD 20742

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

[20] UNIV OREGON,DEPT PHYS,EUGENE,OR 97403

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

[22] DAPNIA SPP,F-91191 GIF SUR YVETTE,FRANCE

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

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

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

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

[27] KOBE UNIV,KOBE 657,JAPAN

[28] BRUNEL UNIV,UXBRIDGE UB8 3PH,MIDDX,ENGLAND

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

[30] UNIV HAMBURG,DESY,INST EXPTL PHYS 2,D-22761 HAMBURG 52,GERMANY

[31] UNIV VICTORIA,DEPT PHYS,IPP,VICTORIA V8W 3P6,BC,CANADA

[32] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 1Z1,BC,CANADA

[33] UNIV ALBERTA,DEPT PHYS,EDMONTON T6G 2N5,AB,CANADA

[34] DUKE UNIV,DEPT PHYS,DURHAM,NC 27708

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

[36] SHINSHU UNIV,MATSUMOTO,NAGANO 390,JAPAN

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1993年 / 60卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

From a sample of about 450 000 hadronic Z0 decays, measurements of the average B0 - B0BAR mixing parameter, chi, the branching fraction of Z0 bosons into hadrons containing bottom quarks, GAMMA(Z0-->bbBAR)/GAMMA(Z0-->hadrons), the average semileptonic branching ratios for such hadrons, B(b-->l) and B(b-->c-->l), and the mean scaled energy of these hadrons, [x(E)], are presented. The measurements were obtained using a simultaneous fit to single-lepton and dilepton events collected with the OPAL detector at LEP, including both electrons and muons. The results are chi = 0.143(+0.022/0.021)+/-0.007 GAMMA(Z0-->bbBAR)/GAMMA(Z0-->hadrons) = 0.222+/-0.011+/-0.007 B(b-->l) = (10.5+/-0.6+/-0.5)% B(b-->c-->l) = (7.7+/-0.4+/-0.7)% [x(E)] = 0.697+/-0.006+/-0.011 where the errors are statistical and systematic, respectively, in each case. The result for B (b-->c-->l) excludes decays of the type b-->cBAR-->l.

引用

页码：199 / 216

页数：18

共 50 条

[21] Measurements of inclusive semileptonic branching fractions of b hadrons in Z0 decays [J].

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, 13 (02) :225-240

[22] B-0(B)over-bar(0)-mixing involving supersymmetry [J].

Urban, J ;

Krauss, F ;

Hofmann, C ;

Soff, G .

MODERN PHYSICS LETTERS A, 1997, 12 (06) :419-426

[23] Evidence for the decays B0 → (D)over-bar(*)0φ and updated measurements of the branching fractions of the Bs0 → (D)over-bar(*)0φ decays [J].

Aaij, R. ;

Abdelmotteleb, A. S. W. ;

Beteta, C. Abellan ;

Abudinen, F. ;

Ackernley, T. ;

Adeva, B. ;

Adinolfi, M. ;

Adlarson, P. ;

Afsharnia, H. ;

Agapopoulou, C. ;

Aidala, C. A. ;

Ajaltouni, Z. ;

Akar, S. ;

Akiba, K. ;

Albicocco, P. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Albero, A. Alfonso ;

Aliouche, Z. ;

Cartelle, P. Alvarez ;

Amalric, R. ;

Amato, S. ;

Amey, J. L. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Andersson, M. ;

Andreianov, A. ;

Andreotti, M. ;

Andreou, D. ;

Ao, D. ;

Archilli, F. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Atzeni, M. ;

Audurier, B. ;

Perea, I. B. Bachiller ;

Bachmann, S. ;

Bachmayer, M. ;

Back, J. J. ;

Bailly-reyre, A. ;

Rodriguez, P. Baladron ;

Balagura, V. ;

Baldini, W. ;

Leite, J. Baptista de Souza ;

Barbetti, M. ;

Barbosa, I. R. ;

Barlow, R. J. .

JOURNAL OF HIGH ENERGY PHYSICS, 2023, (10)

[24] Measurement of the Ratio of Branching Fractions B((B)over-bar0 → D*+τ-(ν)over-barτ)/B((B)over-bar0 → D*+μ-(ν)over-barμ) [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Affolder, A. ;

Ajaltouni, Z. ;

Akar, S. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Anderson, J. ;

Andreassi, G. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Gutierrez, O. Aquines ;

Archilli, F. ;

d'Argent, P. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Baesso, C. ;

Baldini, W. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Batozskaya, V. ;

Battista, V. ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. ;

Bel, L. J. ;

Bellee, V. ;

Belyaev, I. .

PHYSICAL REVIEW LETTERS, 2015, 115 (11)

[25] Production rates of b(b)over-bar quark pairs from gluons and b(b)over-barb(b)over-bar events in hadronic Z0 decays [J].

Abbiendi, G ;

Ackerstaff, K ;

Ainsley, C ;

Akesson, PF ;

Alexander, G ;

Allison, J ;

Anderson, KJ ;

Arcelli, S ;

Asai, S ;

Ashby, SF ;

Axen, D ;

Azuelos, G ;

Bailey, I ;

Ball, AH ;

Barberio, E ;

Barlow, RJ ;

Baumann, S ;

Behnke, T ;

Bell, KW ;

Bella, G ;

Bellerive, A ;

Bentvelsen, S ;

Bethke, S ;

Biebel, O ;

Bloodworth, IJ ;

Bock, P ;

Böhme, J ;

Boeriu, O ;

Bonacorsi, D ;

Boutemeur, M ;

Braibaut, S ;

Bright-Thomas, P ;

Brigliadori, L ;

Brown, RM ;

Burckhart, HJ ;

Cammin, J ;

Capiluppi, P ;

Carnegie, RK ;

Carter, AA ;

Carter, JR ;

Chang, CY ;

Charlton, DG ;

Ciocca, C ;

Clarke, PEL ;

Clay, E ;

Cohen, I ;

Cooke, OC ;

Couchman, J ;

Couyoumtzelis, C ;

Coxe, RL .

EUROPEAN PHYSICAL JOURNAL C, 2001, 18 (03) :447-460

[26] Observation of B0→K*0(K)over-bar*0 and search for B0→K*0(K)over-bar*0 [J].

Aubert, B. ;

Bona, M. ;

Boutigny, D. ;

Karyotakis, Y. ;

Lees, J. P. ;

Poireau, V. ;

Prudent, X. ;

Tisserand, V. ;

Zghiche, A. ;

Tico, J. Garra ;

Grauges, E. ;

Lopez, L. ;

Palano, A. ;

Pappagallo, M. ;

Eigen, G. ;

Stugu, B. ;

Sun, L. ;

Abrams, G. S. ;

Battaglia, M. ;

Brown, D. N. ;

Button-Shafer, J. ;

Cahn, R. N. ;

Groysman, Y. ;

Jacobsen, R. G. ;

Kadyk, J. A. ;

Kerth, L. T. ;

Kolomensky, Yu. G. ;

Kukartsev, G. ;

Pegna, D. Lopes ;

Lynch, G. ;

Mir, L. M. ;

Orimoto, T. J. ;

Osipenkov, I. L. ;

Ronan, M. T. ;

Tackmann, K. ;

Tanabe, T. ;

Wenzel, W. A. ;

Sanchez, P. del Amo ;

Hawkes, C. M. ;

Watson, A. T. ;

Koch, H. ;

Schroeder, T. ;

Walker, D. ;

Asgeirsson, D. J. ;

Cuhadar-Donszelmann, T. ;

Fulsom, B. G. ;

Hearty, C. ;

Mattison, T. S. ;

McKenna, J. A. ;

Khan, A. .

PHYSICAL REVIEW LETTERS, 2008, 100 (08)

[27] Improved measurement of the probability for gluon splitting into b(b)over-bar in Z0 decays [J].

Abe, K ;

Abe, T ;

Adam, I ;

Akimoto, H ;

Aston, D ;

Baird, KG ;

Baltay, C ;

Band, HR ;

Barklow, TL ;

Bauer, JM ;

Bellodi, G ;

Berger, R ;

Blaylock, G ;

Bogart, JR ;

Bower, GR ;

Brau, JE ;

Breidenbach, M ;

Bugg, WM ;

Burke, D ;

Burnett, TH ;

Burrows, PN ;

Calcaterra, A ;

Cassell, R ;

Chou, A ;

Cohn, HO ;

Coller, JA ;

Convery, MR ;

Cook, V ;

Cowan, RF ;

Crawford, G ;

Damerell, CJS ;

Daoudi, M ;

de Groot, N ;

de Sangro, R ;

Dong, DN ;

Doser, M ;

Dubois, R ;

Erofeeva, I ;

Eschenburg, V ;

Etzion, E ;

Fahey, S ;

Falciai, D ;

Fernandez, JP ;

Flood, K ;

Frey, R ;

Hart, EL ;

Hasuko, K ;

Hertzbach, SS ;

Huffer, ME .

PHYSICS LETTERS B, 2001, 507 (1-4) :61-69

[28] Direct CP violation in B∓→π∓ω, π∓ρ0,π0ρ∓, and in (B0)over-bar(B0)→π∓ρ± with an enhanced branching ratio for π0ρ0 [J].

Barshay, S ;

Kreyerhoff, G ;

Sehgal, LM .

PHYSICS LETTERS B, 2004, 595 :318-322

[29] Search for bb(b)over-bar(b)over-bar tetraquark decays in 4 muons, B+(B)over-bar-, B0(B)over-bar0 and Bs0 (B)over-bars0 channels at LHC [J].

Becchi, C. ;

Giachino, A. ;

Maiani, L. ;

Santopinto, E. .

PHYSICS LETTERS B, 2020, 806

[30] Dimuon production and B-0-(B)over-bar(0) mixing at DO [J].

Feher, S .

10TH TOPICAL WORKSHOP ON PROTON-ANTIPROTON COLLIDER PHYSICS, 1996, (357) :137-144

← 1 2 3 4 5 →