Simultaneous measurement of the ratio R = B(t → Wb)/B(t → Wq) and the top-quark pair production cross section with the D0 detector at √s=1.96 TeV

被引:33
作者
Abazov, V. M. [1 ]
Abbott, B. [86 ]
Abolins, M. [76 ]
Acharya, B. S. [35 ]
Adams, M. [62 ]
Adams, T.
Aguilo, E. [6 ,7 ,8 ,9 ]
Ahn, S. H. [37 ]
Ahsan, M.
Alexeev, G. D. [1 ]
Alkhazov, G. [46 ]
Alton, A. [75 ]
Alverson, G. [74 ]
Alves, G. A. [2 ]
Anastasoaie, M. [42 ]
Ancu, L. S. [42 ]
Andeen, T. [64 ]
Anderson, S. [55 ]
Andrieu, B. [20 ,21 ]
Anzelc, M. S.
Arnoud, Y. [17 ]
Arov, M.
Arthaud, M. [22 ]
Askew, A. [60 ]
Asman, B. [47 ,48 ,49 ,50 ]
Jesus, A. C. S. Assis [3 ]
Atramentov, O. [60 ]
Autermann, C. [27 ]
Avila, C. [11 ]
Ay, C. [30 ]
Badaud, F. [16 ]
Baden, A. [72 ]
Bagby, L. [63 ]
Baldin, B. [61 ]
Bandurin, D. V.
Banerjee, S. [35 ]
Banerjee, P. [35 ]
Barberis, E. [74 ]
Barfuss, A. -F. [18 ]
Bargassa, P. [91 ]
Baringer, P. [69 ]
Barreto, J. [2 ]
Bartlett, J. F. [61 ]
Bassler, U. [22 ]
Bauer, D. [53 ]
Beale, S. [6 ,7 ,8 ,9 ]
Bean, A. [69 ]
Begalli, M. [3 ]
Begel, M. [82 ]
Belanger-Champagne, C. [47 ,48 ,49 ,50 ]
机构
[1] Joint Inst Nucl Res, Dubna, Russia
[2] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil
[3] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil
[4] Univ Fed ABC, Santo Andre, Brazil
[5] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
[6] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada
[7] Univ Alberta, Edmonton, AB, Canada
[8] York Univ, Toronto, ON M3J 2R7, Canada
[9] McGill Univ, Montreal, PQ, Canada
[10] Univ Sci & Technol China, Hefei 230026, Peoples R China
[11] Univ Los Andes, Bogota, Colombia
[12] Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic
[13] Czech Tech Univ, CR-16635 Prague, Czech Republic
[14] Acad Sci Czech Republic, Inst Phys, Ctr Particle Phys, Prague, Czech Republic
[15] Univ San Francisco Quito, Quito, Ecuador
[16] Univ Clermont Ferrand, LPC, CNRS IN2P3, Clermont, France
[17] Univ Grenoble 1, LPSC, CNRS IN2P3, Inst Natl Polytech Grenoble, F-38041 Grenoble, France
[18] Univ Aix Marseille 2, CPPM, IN2P3, CNRS, Marseille, France
[19] Univ Paris 11, CNRS, LAL, IN2P3, F-91405 Orsay, France
[20] Univ Paris 06, CNRS, LPNHE, IN2P3, Paris, France
[21] Univ Paris 07, CNRS, LPNHE, IN2P3, Paris, France
[22] CEA, Serv Phys Particules, DAPNIA, Saclay, France
[23] Univ Strasbourg 1, IPHC, Strasbourg, France
[24] Univ Haute Alsace, CNRS IN2P3, Strasbourg, France
[25] Univ Lyon, Lyon, France
[26] Univ Lyon 1, CNRS, IPNL, IN2P3, F-69622 Villeurbanne, France
[27] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany
[28] Univ Bonn, Inst Phys, D-5300 Bonn, Germany
[29] Univ Freiburg, Inst Phys, Freiburg, Germany
[30] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany
[31] Univ Munich, Munich, Germany
[32] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany
[33] Panjab Univ, Chandigarh 160014, India
[34] Univ Delhi, Delhi 110007, India
[35] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[36] Univ Coll Dublin, Dublin 2, Ireland
[37] Korea Univ, Korea Detector Lab, Seoul, South Korea
[38] Sungkyunkwan Univ, Suwon, South Korea
[39] CINVESTAV, Mexico City 14000, DF, Mexico
[40] FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands
[41] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands
[42] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands
[43] Inst Theoret & Expt Phys, Moscow 117259, Russia
[44] Moscow MV Lomonosov State Univ, Moscow, Russia
[45] Inst High Energy Phys, Protvino, Russia
[46] Petersburg Nucl Phys Inst, St Petersburg, Russia
[47] Lund Univ, Lund, Sweden
[48] Royal Inst Technol, Stockholm, Sweden
[49] Stockholm Univ, S-10691 Stockholm, Sweden
[50] Uppsala Univ, Uppsala, Sweden
基金
英国科学技术设施理事会;
关键词
D O I
10.1103/PhysRevLett.100.192003
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present the first simultaneous measurement of the ratio of branching fractions, R = B(t --> Wb)/B(t --> Wq), with q being a d, s, or b quark, and the top-quark pair production cross section sigma(t (t) over bar) in the lepton plus jets channel using 0.9 fb(-1) of p (p) over bar collision data at root s = 1.96 TeV collected with the D0 detector. We extract R and sigma(t (t) over bar) by analyzing samples of events with 0, 1, and >= 2 identified b jets. We measure R = 0.97(-0.08)(+0.09) (stat + syst) and sigma(t (t) over bar) = 8.18(-0.84)(+0.90) (stat + syst) +/- 0.50(lumi) pb, in agreement with the standard model prediction.
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页数:7
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[1]   Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at √s=1.96 TeV using secondary vertex b tagging [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Askew, A. ;
Asman, B. ;
Assis Jesus, A. C. S. ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, P. ;
Banerjee, S. ;
Barberis, E. ;
Bargassa, P. ;
Baringer, P. ;
Barnes, C. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. ;
Bellantoni, L. .
PHYSICAL REVIEW D, 2006, 74 (11)
[2]   Evidence for production of single top quarks and first direct measurement of |Vtb| [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Askew, A. ;
Asman, B. ;
Jesus, A. C. S. Assis ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, P. ;
Banerjee, S. ;
Barberis, E. ;
Bargassa, P. ;
Baringer, P. ;
Barnes, C. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. ;
Bellantoni, L. .
PHYSICAL REVIEW LETTERS, 2007, 98 (18)
[3]   Measurement of β (t→Wb)/β(t→Wq) at √s=1.96 TeV [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Agelou, M. ;
Agram, J. -L. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Askew, A. ;
Asman, B. ;
Jesus, A. C. S. Assis ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, P. ;
Banerjee, S. ;
Barberis, E. ;
Bargassa, P. ;
Baringer, P. ;
Barnes, C. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Bellavance, A. ;
Benitez, J. ;
Beri, S. B. .
PHYSICS LETTERS B, 2006, 639 (06) :616-622
[4]   Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at √s=1.96 TeV using kinematic characteristics of lepton plus jets events [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, M. ;
Adams, T. ;
Aguilo, E. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Ancu, L. S. ;
Andeen, T. ;
Anderson, S. ;
Andrieu, B. ;
Anzelc, M. S. ;
Arnoud, Y. ;
Arov, M. ;
Arthaud, M. ;
Askew, A. ;
Asman, B. ;
Jesus, A. C. S. Assis ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Ay, C. ;
Badaud, F. ;
Baden, A. ;
Bagby, L. ;
Baldin, B. ;
Bandurin, D. V. ;
Banerjee, S. ;
Banerjee, P. ;
Barberis, E. ;
Barfuss, A. -F. ;
Bargassa, P. ;
Baringer, P. ;
Barreto, J. ;
Bartlett, J. F. ;
Bassler, U. ;
Bauer, D. ;
Beale, S. ;
Bean, A. ;
Begalli, M. ;
Begel, M. ;
Belanger-Champagne, C. .
PHYSICAL REVIEW D, 2007, 76 (09)
[5]   The upgraded DO detector [J].
Abazov, V. M. ;
Abbott, B. ;
Abolins, M. ;
Acharya, B. S. ;
Adams, D. L. ;
Adams, M. ;
Adams, T. ;
Agelou, M. ;
Agram, J. -L. ;
Ahmed, S. N. ;
Ahn, S. H. ;
Ahsan, M. ;
Alexeev, G. D. ;
Alkhazov, G. ;
Alton, A. ;
Alverson, G. ;
Alves, G. A. ;
Anastasoaie, M. ;
Andeen, T. ;
Anderson, J. T. ;
Anderson, S. ;
Andrieu, B. ;
Angstadt, R. ;
Anosov, V. ;
Arnoud, Y. ;
Arov, M. ;
Askew, A. ;
Asman, B. ;
Assis Jesus, A. C. S. ;
Atramentov, O. ;
Autermann, C. ;
Avila, C. ;
Babukhadia, L. ;
Bacon, T. C. ;
Badaud, F. ;
Baden, A. ;
Baffioni, S. ;
Bagby, L. ;
Baldin, B. ;
Balm, P. W. ;
Banerjee, P. ;
Banerjee, S. ;
Barberis, E. ;
Bardon, O. ;
Barg, W. ;
Bargassa, P. ;
Baringer, P. ;
Barnes, C. ;
Barreto, J. ;
Bartlett, J. F. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 565 (02) :463-537
[6]   Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions at √s=1.96 TeV [J].
Abulencia, A. ;
Acosta, D. ;
Adelman, J. ;
Affolder, T. ;
Akimoto, T. ;
Albrow, M. G. ;
Ambrose, D. ;
Amerio, S. ;
Amidei, D. ;
Anastassov, A. ;
Anikeev, K. ;
Annovi, A. ;
Antos, J. ;
Aoki, M. ;
Apollinari, G. ;
Arguin, J. -F. ;
Arisawa, T. ;
Artikov, A. ;
Ashmanskas, W. ;
Attal, A. ;
Azfar, F. ;
Azzi-Bacchetta, P. ;
Azzurri, P. ;
Bacchetta, N. ;
Bachacou, H. ;
Badgett, W. ;
Barbaro-Galtieri, A. ;
Barnes, V. E. ;
Barnett, B. A. ;
Baroiant, S. ;
Bartsch, V. ;
Bauer, G. ;
Bedeschi, F. ;
Behari, S. ;
Belforte, S. ;
Bellettini, G. ;
Bellinger, J. ;
Belloni, A. ;
Ben Haim, E. ;
Benjamin, D. ;
Beretvas, A. ;
Beringer, J. ;
Berry, T. ;
Bhatti, A. ;
Binkley, M. ;
Bisello, D. ;
Blair, R. E. ;
Blocker, C. ;
Blumenfeld, B. ;
Bocci, A. .
PHYSICAL REVIEW LETTERS, 2006, 97 (08)
[7]   Measurement of B(t→Wb)/B(t→Wq) at the Collider Detector at Fermilab -: art. no. 102002 [J].
Acosta, D ;
Adelman, J ;
Affolder, T ;
Akimoto, T ;
Albrow, MG ;
Ambrose, D ;
Amerio, S ;
Amidei, D ;
Anastassov, A ;
Anikeev, K ;
Annovi, A ;
Antos, J ;
Aoki, M ;
Apollinari, G ;
Arisawa, T ;
Arguin, JF ;
Artikov, A ;
Ashmanskas, W ;
Attal, A ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bachacou, H ;
Badgett, W ;
Barbaro-Galtieri, A ;
Barker, GJ ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Bauer, G ;
Bedeschi, F ;
Behari, S ;
Belforte, S ;
Bellettini, G ;
Bellinger, J ;
Belloni, A ;
Ben-Haim, E ;
Benjamin, D ;
Beretvas, A ;
Berry, T ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Bocci, A ;
Bodek, A .
PHYSICAL REVIEW LETTERS, 2005, 95 (10)
[8]   Measurement of the t(t)over-bar production cross section in p(p)over-barcollisions at √s=1.96 TeV using kinematic fitting of b-tagged lepton plus jet events -: art. no. 072005 [J].
Acosta, D ;
Adelman, J ;
Affolder, T ;
Akimoto, T ;
Albrow, MG ;
Ambrose, D ;
Amerio, S ;
Amidei, D ;
Anastassov, A ;
Anikeev, K ;
Annovi, A ;
Antos, J ;
Aoki, M ;
Apollinari, G ;
Arisawa, T ;
Arguin, JF ;
Artikov, A ;
Ashmanskas, W ;
Attal, A ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bachacou, H ;
Badgett, W ;
Barbaro-Galtieri, A ;
Barker, GJ ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Barone, M ;
Bauer, G ;
Bedeschi, F ;
Behari, S ;
Belforte, S ;
Bellettini, G ;
Bellinger, J ;
Ben-Haim, E ;
Benjamin, D ;
Beretvas, A ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Bocci, A ;
Bodek, A ;
Bolla, G .
PHYSICAL REVIEW D, 2005, 71 (07) :1-11
[9]   First measurement of the ratio B(t → Wb)/B(t → Wq) and associated limit on the Cabibbo-Kobayashi-Maskawa element |Vtb| [J].
Affolder, T ;
Akimoto, H ;
Akopian, A ;
Albrow, MG ;
Amaral, P ;
Amendolia, SR ;
Amidei, D ;
Anikeev, K ;
Antos, J ;
Apollinari, G ;
Arisawa, T ;
Asakawa, T ;
Ashmanskas, W ;
Azfar, F ;
Azzi-Bacchetta, P ;
Bacchetta, N ;
Bailey, MW ;
Bailey, S ;
de Barbaro, P ;
Barbaro-Galtieri, A ;
Barnes, VE ;
Barnett, BA ;
Baroiant, S ;
Barone, M ;
Bauer, G ;
Bedeschi, F ;
Belforte, S ;
Bell, WH ;
Bellettini, G ;
Bellinger, J ;
Benjamin, D ;
Bensinger, J ;
Beretvas, A ;
Berge, JP ;
Berryhill, J ;
Bevensee, B ;
Bhatti, A ;
Binkley, M ;
Bisello, D ;
Bishai, M ;
Blair, RE ;
Blocker, C ;
Bloom, K ;
Blumenfeld, B ;
Blusk, SR ;
Bocci, A ;
Bodek, A ;
Bokhari, W ;
Bolla, G ;
Bonushkin, Y .
PHYSICAL REVIEW LETTERS, 2001, 86 (15) :3233-3238
[10]   Is Vtb≃1? [J].
Alwall, J. ;
Frederix, R. ;
Gerard, J. -M. ;
Giammanco, A. ;
Herquet, M. ;
Kalinin, S. ;
Kou, E. ;
Lemaitre, V. ;
Maltoni, F. .
EUROPEAN PHYSICAL JOURNAL C, 2007, 49 (03) :791-801