Evidence for production of single top quarks and first direct measurement of |Vtb|

被引：119

作者：

Abazov, V. M. ^{[1
]}

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.

机构：

[1] Joint Inst Nucl Res, Dubna, Russia

[2] Univ Buenos Aires, RA-1053 Buenos Aires, DF, Argentina

[3] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil

[4] Univ Estado Rio de Janeiro, Rio De Janeiro, Brazil

[5] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[6] Univ Alberta, Edmonton, AB, Canada

[7] Simon Fraser Univ, Burnaby, BC V5A 1S6, 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 Prague, CR-16635 Prague, Czech Republic

[14] Acad Sci Czech Republ, Ctr Particle Phys, Inst Phys, Prague, Czech Republic

[15] Univ San Francisco Quito, Quito, Ecuador

[16] Univ Clermont Ferrand, CNRS, IN2P3, Phys Corpusculaire Lab, Clermont Ferrand, France

[17] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, Grenoble, France

[18] Univ Aix Marseille 2, CNRS, IN2P3, CPPM, Marseille, France

[19] CNRS, IN2P3, Lab Accelerateur Lineaire, F-91405 Orsay, France

[20] Univ Paris 11, Orsay, France

[21] Univ Paris 06, CNRS, IN2P3, LPNHE, Paris, France

[22] Univ Paris 07, Paris, France

[23] CEA Saclay, DAPNIA, Serv Phys Particules, Gif Sur Yvette, France

[24] Univ Strasbourg 1, IPHC, IN2P3, CNRS, Strasbourg, France

[25] Univ Haute Alsace, Mulhouse, France

[26] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, F-69622 Villeurbanne, France

[27] Rhein Westfal TH Aachen, Phys Inst 3A, D-5100 Aachen, Germany

[28] Univ Bonn, Inst Phys, D-5300 Bonn, Germany

[29] Univ Freiburg, Inst Phys, Freiburg, Germany

[30] 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 136701, South Korea

[38] Sungkyunkwan Univ, Suwon, South Korea

[39] CINVESTAV, Mexico City 14000, DF, Mexico

[40] NIKHEF H, FOM Inst, NL-1009 DB Amsterdam, Netherlands

[41] Univ Amsterdam, NL-1009 DB Amsterdam, Netherlands

[42] Radboud Univ Nijmegen, NIKHEF H, 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] Royal Inst Technol, Stockholm, Sweden

[48] Lund Univ, Lund, Sweden

[49] Stockholm Univ, S-10691 Stockholm, Sweden

[50] Uppsala Univ, Uppsala, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 18期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.98.181802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The D0 Collaboration presents first evidence for the production of single top quarks at the Fermilab Tevatron < p(p)over bar > collider. Using a 0.9 fb(-1) dataset, we apply a multivariate analysis to separate signal from background and measure sigma(< p(p)over bar >-> tb+X,tqb+X)=4.9 +/- 1.4 pb. The probability to measure a cross section at this value or higher in the absence of a signal is 0.035%, corresponding to a 3.4 standard deviation significance. We use the cross section measurement to directly determine the Cabibbo-Kobayashi-Maskawa matrix element that describes the Wtb coupling and find 0.68 <vertical bar V-tb vertical bar <= 1 at 95% C.L. within the standard model.

引用

页数：8

共 51 条

[1] OBSERVATION OF THE TOP-QUARK [J].

ABACHI, S ;

ABBOTT, B ;

ABOLINS, M ;

ACHARYA, BS ;

ADAM, I ;

ADAMS, DL ;

ADAMS, M ;

AHN, S ;

AIHARA, H ;

ALITTI, J ;

ALVAREZ, G ;

ALVES, GA ;

AMIDI, E ;

AMOS, N ;

ANDERSON, EW ;

ARONSON, SH ;

ASTUR, R ;

AVERY, RE ;

BADEN, A ;

BALAMURALI, V ;

BALDERSTON, J ;

BALDIN, B ;

BANTLY, J ;

BARTLETT, JF ;

BAZIZI, K ;

BENDICH, J ;

BERI, SB ;

BERTRAM, I ;

BEZZUBOV, VA ;

BHAT, PC ;

BHATNAGAR, V ;

BHATTACHARJEE, M ;

BISCHOFF, A ;

BISWAS, N ;

BLAZEY, G ;

BLESSING, S ;

BOEHNLEIN, A ;

BOJKO, NI ;

BORCHERDING, F ;

BORDERS, J ;

BOSWELL, C ;

BRANDT, A ;

BROCK, R ;

BROSS, A ;

BUCHHOLZ, D ;

BURTOVOI, VS ;

BUTLER, JM ;

CASEY, D ;

CASTILLAVALDEZ, H ;

CHAKRABORTY, D .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2632-2637

[2] Helicity of the W boson in lepton plus jets t(t)over-bar events [J].

Abazov, V ;

Abbott, B ;

Abdesselam, A ;

Abolins, M ;

Abramov, V ;

Acharya, BS ;

Adams, DL ;

Adams, M ;

Ahmed, SN ;

Alexeev, GD ;

Alton, A ;

Alves, GA ;

Arnoud, Y ;

Avila, C ;

Babintsev, VV ;

Babukhadia, L ;

Bacon, TC ;

Baden, A ;

Baffioni, S ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Barberis, E ;

Baringer, P ;

Barreto, J ;

Bartlett, KF ;

Bassler, U ;

Bauer, D ;

Bean, A ;

Beaudette, F ;

Begel, M ;

Belyaev, A ;

Beri, SB ;

Bernardi, G ;

Bertram, I ;

Besson, A ;

Beuselinck, R ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Blazey, G ;

Blekman, F ;

Blessing, S ;

Boehnlein, A ;

Bojko, NI ;

Bolton, TA ;

Borcherding, F ;

Bos, K ;

Bose, T .

PHYSICS LETTERS B, 2005, 617 (1-2) :1-10

[3] Measurement of the top quark mass in the lepton plus jets final state with the matrix element method [J].

Abazov, V. M. ;

Abbott, B. ;

Abolins, M. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Agelou, M. ;

Aguilo, E. ;

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. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. ;

Bellantoni, L. .

PHYSICAL REVIEW D, 2006, 74 (09)

[4] 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

[5] A precision measurement of the mass of the top quark [J].

Abazov, VM ;

Abbott, B ;

Abdesselam, A ;

Abolins, M ;

Abramov, V ;

Acharya, BS ;

Adams, DL ;

Adams, M ;

Ahmed, SN ;

Alexeev, GD ;

Alton, A ;

Alves, GA ;

Arnoud, Y ;

Avila, C ;

Babintsev, VV ;

Babukhadia, L ;

Bacon, TC ;

Baden, A ;

Baffioni, S ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Barberis, E ;

Baringer, P ;

Barreto, J ;

Bartlett, JF ;

Bassler, U ;

Bauer, D ;

Bean, A ;

Beaudette, F ;

Begel, M ;

Belyaev, A ;

Beri, SB ;

Bernardi, G ;

Bertram, I ;

Besson, A ;

Beuselinck, R ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Blazey, G ;

Blekman, F ;

Blessing, S ;

Boehnlein, A ;

Bojko, NI ;

Bolton, TA ;

Borcherding, F ;

Bos, K ;

Bose, T .

NATURE, 2004, 429 (6992) :638-642

[6] Search for single top quark production in pp collisions at √s=1.96 TeV [J].

Abazov, VM ;

Abbott, B ;

Abolins, M ;

Acharya, BS ;

Adams, M ;

Adams, T ;

Agelou, M ;

Agram, JL ;

Ahn, SH ;

Ahsan, M ;

Alexeev, GD ;

Alkhazov, G ;

Alton, A ;

Alverson, G ;

Alves, GA ;

Anastasoaie, M ;

Andeen, T ;

Anderson, S ;

Andrieu, B ;

Arnoud, Y ;

Askew, A ;

Åsman, B ;

Jesus, ACSA ;

Atramentov, O ;

Autermann, C ;

Avila, C ;

Badaud, F ;

Baden, A ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Barberis, E ;

Bargassa, P ;

Baringer, P ;

Barnes, C ;

Barreto, J ;

Bartlett, JF ;

Bassler, U ;

Bauer, D ;

Bean, A ;

Beauceron, S ;

Begalli, M ;

Begel, M ;

Bellavance, A ;

Beri, SB ;

Bernardi, G ;

Bernhard, R ;

Bertram, I ;

Besançon, M ;

Beuselinck, R .

PHYSICS LETTERS B, 2005, 622 (3-4) :265-276

[7] Search for single top quark production at DO using neural networks [J].

Abazov, VM ;

Abbott, B ;

Abdesselam, A ;

Abolins, M ;

Abramov, V ;

Acharya, BS ;

Adams, DL ;

Adams, M ;

Ahmed, SN ;

Alexeev, GD ;

Alves, GA ;

Amos, N ;

Anderson, EW ;

Arnoud, Y ;

Baarmand, MM ;

Babintsev, VV ;

Babukhadia, L ;

Bacon, TC ;

Baden, A ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Barberis, E ;

Baringer, P ;

Barreto, J ;

Bartlett, JF ;

Bassler, U ;

Bauer, D ;

Bean, A ;

Begel, M ;

Belyaev, A ;

Beri, SB ;

Bernardi, G ;

Bertram, I ;

Besson, A ;

Beuselinck, R ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Blazey, G ;

Blessing, S ;

Boehnlein, A ;

Bojko, NI ;

Boos, EE ;

Borcherding, F ;

Bos, K ;

Brandt, A ;

Breedon, R ;

Briskin, G .

PHYSICS LETTERS B, 2001, 517 (3-4) :282-294

[8]

ABAZOV VM, IN PRESS PHYS REV D

[9] Search for electroweak production of single top quarks in p(p)over-bar collisions -: art. no. 031101 [J].

Abbott, B ;

Abolins, M ;

Abramov, V ;

Acharya, BS ;

Adams, DL ;

Adams, M ;

Alves, GA ;

Amos, N ;

Anderson, EW ;

Baarmand, MM ;

Babintsev, VV ;

Babukhadia, L ;

Baden, A ;

Baldin, B ;

Balm, PW ;

Banerjee, S ;

Bantly, J ;

Barberis, E ;

Baringer, P ;

Bartlett, JF ;

Bassler, U ;

Bean, A ;

Begel, M ;

Belyaev, A ;

Beri, SB ;

Bernardi, G ;

Bertram, I ;

Besson, A ;

Bezzubov, VA ;

Bhat, PC ;

Bhatnagar, V ;

Bhattacharjee, M ;

Blazey, G ;

Blessing, S ;

Boehnlein, A ;

Bojko, NI ;

Boos, EE ;

Borcherding, F ;

Brandt, A ;

Breedon, R ;

Briskin, G ;

Brock, R ;

Brooijmans, G ;

Bross, A ;

Buchholz, D ;

Buehler, B ;

Buescher, V ;

Burtovoi, VS ;

Butler, JM ;

Canelli, F .

PHYSICAL REVIEW D, 2001, 63 (03)

[10] NEARBY DOORWAY STATES, PARITY DOUBLETS, AND PARITY MIXING IN COMPOUND NUCLEAR-STATES [J].

AUERBACH, N ;

BOWMAN, JD ;

SPEVAK, V .

PHYSICAL REVIEW LETTERS, 1995, 74 (14) :2638-2641

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