Search for flavor changing neutral currents in decays of top quarks

被引:44
作者
Abazov, V. M. [1 ]
Abbott, B. [78 ]
Acharya, B. S. [32 ]
Adams, M. [54 ]
Adams, T. [52 ]
Alexeev, G. D. [1 ]
Alkhazov, G. [42 ]
Alton, A. [66 ]
Alverson, G. [65 ]
Alves, G. A. [3 ]
Ancu, L. S. [38 ]
Aoki, M. [53 ]
Arov, M. [63 ]
Askew, A. [52 ]
Asman, B. [45 ,46 ]
Atramentov, O. [70 ]
Avila, C. [10 ]
BackusMayes, J. [85 ]
Badaud, F. [14 ]
Bagby, L. [53 ]
Baldin, B. [53 ]
Bandurin, D. V. [52 ]
Banerjee, S. [32 ]
Barberis, E. [65 ]
Baringer, P. [61 ]
Barreto, J. [4 ]
Bartlett, J. F. [53 ]
Bassler, U. [20 ]
Bazterra, V. [54 ]
Beale, S. [7 ,8 ]
Bean, A. [61 ]
Begalli, M. [4 ]
Begel, M. [76 ]
Belanger-Champagne, C. [45 ,46 ]
Bellantoni, L. [53 ]
Beri, S. B. [30 ]
Bernardi, G. [18 ,19 ]
Bernhard, R. [25 ]
Bertram, I. [47 ]
Besancon, M. [20 ]
Beuselinck, R. [48 ]
Bezzubov, V. A. [41 ]
Bhat, P. C. [53 ]
Bhatnagar, V. [30 ]
Blazey, G. [55 ]
Blessing, S. [52 ]
Bloom, K. [69 ]
Boehnlein, A. [53 ]
Boline, D. [75 ]
Bolton, T. A. [62 ]
机构
[1] Joint Inst Nucl Res, Dubna, Russia
[2] Univ Buenos Aires, Buenos Aires, DF, Argentina
[3] Ctr Brasileiro Pesquisas Fis, LAFEX, Rio De Janeiro, Brazil
[4] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil
[5] Univ Fed ABC, Santo Andre, Brazil
[6] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil
[7] York Univ, Toronto, ON M3J 2R7, Canada
[8] Simon Fraser Univ, Vancouver, BC, Canada
[9] Univ Sci & Technol China, Hefei 230026, Peoples R China
[10] Univ los Andes, Bogota, Colombia
[11] Charles Univ Prague, Fac Math & Phys, Ctr Particle Phys, Prague, Czech Republic
[12] Czech Tech Univ, CR-16635 Prague, Czech Republic
[13] Univ San Francisco Quito, Quito, Ecuador
[14] Univ Blaise Pascal, LPC, CNRS, IN2P3, Clermont, France
[15] Univ Grenoble 1, CNRS, LPSC, Inst Natl Polytech Grenoble,IN2P3, Grenoble, France
[16] Univ Aix Marseille 1, CPPM, CNRS, IN2P3, Marseille, France
[17] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France
[18] Univ Paris 06, LPNHE, Paris, France
[19] Univ Paris 07, CNRS, IN2P3, Paris, France
[20] SPP, CEA, Saclay, France
[21] Univ Strasbourg, IPHC, CNRS, IN2P3, Strasbourg, France
[22] Univ Lyon, Lyon, France
[23] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France
[24] Rhein Westfal TH Aachen, Phys Inst A 1, Aachen, Germany
[25] Univ Freiburg, Inst Phys, Freiburg, Germany
[26] Univ Gottingen, Inst Phys 2, Gottingen, Germany
[27] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany
[28] Univ Munich, Munich, Germany
[29] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany
[30] Panjab Univ, Chandigarh 160014, India
[31] Univ Delhi, Delhi 110007, India
[32] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
[33] Univ Coll Dublin, Dublin 2, Ireland
[34] Korea Univ, Korea Detector Lab, Seoul, South Korea
[35] CINVESTAV, Mexico City 14000, DF, Mexico
[36] FOM Inst NIKHEF, Amsterdam, Netherlands
[37] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands
[38] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands
[39] Inst Theoret & Expt Phys, Moscow 117259, Russia
[40] Moscow MV Lomonosov State Univ, Moscow, Russia
[41] Inst High Energy Phys, Protvino, Russia
[42] Petersburg Nucl Phys Inst, St Petersburg, Russia
[43] ICREA, Barcelona, Spain
[44] IFAE, Barcelona, Spain
[45] Uppsala Univ, Uppsala, Sweden
[46] Stockholm Univ, S-10691 Stockholm, Sweden
[47] Univ Lancaster, Lancaster LA1 4YB, England
[48] Univ London Imperial Coll Sci Technol & Med, London SW7 2AZ, England
[49] Univ Manchester, Manchester M13 9PL, Lancs, England
[50] Univ Arizona, Tucson, AZ 85721 USA
基金
加拿大自然科学与工程研究理事会; 瑞典研究理事会; 巴西圣保罗研究基金会;
关键词
Tevatron; D0; Top quark; Flavor changing neutral current; P(P)OVER-BAR COLLISIONS; ROOT-S; COUPLINGS;
D O I
10.1016/j.physletb.2011.06.014
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a search for flavor changing neutral currents in decays of top quarks. The analysis is based on a search for t (t) over bar -> l'vl (l) over bar + jets (l, l' = e. mu) final states using 4.1 fb(-1) of integrated luminosity of p (p) over bar collisions at root s = 1.96 TeV. We extract limits on the branching ratio B(t -> Zq) (q = u, c quarks), assuming anomalous tuZ or tcZ couplings. We do not observe any sign of such anomalous coupling and set a limit of B < 3.2% at 95% C.L. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:313 / 320
页数:8
相关论文
共 45 条
  • [1] Search for the Flavor-Changing Neutral-Current Decay t→Zq in pp Collisions at s=1.96 TeV
    Aaltonen, T.
    Adelman, J.
    Akimoto, T.
    Albrow, M. G.
    Alvarez Gonzalez, B.
    Amerio, S.
    Amidei, D.
    Anastassov, A.
    Annovi, A.
    Antos, J.
    Apollinari, G.
    Apresyan, A.
    Arisawa, T.
    Artikov, A.
    Ashmanskas, W.
    Attal, A.
    Aurisano, A.
    Azfar, F.
    Azzurri, P.
    Badgett, W.
    Barbaro-Galtieri, A.
    Barnes, V. E.
    Barnett, B. A.
    Bartsch, V.
    Bauer, G.
    Beauchemin, P. -H.
    Bedeschi, F.
    Bednar, P.
    Beecher, D.
    Behari, S.
    Bellettini, G.
    Bellinger, J.
    Benjamin, D.
    Beretvas, A.
    Beringer, J.
    Bhatti, A.
    Binkley, M.
    Bisello, D.
    Bizjak, I.
    Blair, R. E.
    Blocker, C.
    Blumenfeld, B.
    Bocci, A.
    Bodek, A.
    Boisvert, V.
    Bolla, G.
    Bortoletto, D.
    Boudreau, J.
    Boveia, A.
    Brau, B.
    [J]. PHYSICAL REVIEW LETTERS, 2008, 101 (19)
  • [2] Search for the rare decays B+ → μ+μ-K+, B0 → μ+μ- K*(892)0, and Bs0 → μ+μ-φ at CDF
    Aaltonen, T.
    Adelman, J.
    Akimoto, T.
    Albrow, M. G.
    Alvarez Gonzalez, B.
    Amerio, S.
    Amidei, D.
    Anastassov, A.
    Annovi, A.
    Antos, J.
    Apollinari, G.
    Apresyan, A.
    Arisawa, T.
    Artikov, A.
    Ashmanskas, W.
    Attal, A.
    Aurisano, A.
    Azfar, F.
    Azzurri, P.
    Badgett, W.
    Barbaro-Galtieri, A.
    Barnes, V. E.
    Barnett, B. A.
    Bartsch, V.
    Bauer, G.
    Beauchemin, P.-H.
    Bedeschi, F.
    Bednar, P.
    Beecher, D.
    Behari, S.
    Bellettini, G.
    Bellinger, J.
    Benjamin, D.
    Beretvas, A.
    Beringer, J.
    Bhatti, A.
    Binkley, M.
    Bisello, D.
    Bizjak, I.
    Blair, R. E.
    Blocker, C.
    Blumenfeld, B.
    Bocci, A.
    Bodek, A.
    Boisvert, V.
    Bolla, G.
    Bortoletto, D.
    Boudreau, J.
    Boveia, A.
    Brau, B.
    [J]. PHYSICAL REVIEW D, 2009, 79 (01):
  • [3] Search for single top quark production at HERA
    Aaron, F. D.
    Martin, M. Aldaya
    Alexa, C.
    Alimujiang, K.
    Andreev, V.
    Antunovic, B.
    Asmone, A.
    Backovic, S.
    Baghdasaryan, A.
    Barrelet, E.
    Bartel, W.
    Begzsuren, K.
    Belousov, A.
    Bizot, J. C.
    Boudry, V.
    Bozovic-Jelisavcic, I.
    Bracinik, J.
    Brandt, G.
    Brinkmann, M.
    Brisson, V.
    Bruncko, D.
    Bunyatyan, A.
    Buschhorn, G.
    Bystritskaya, L.
    Campbell, A. J.
    Avila, K. B. Cantun
    Cassol-Brunner, F.
    Cerny, K.
    Cerny, V.
    Chekelian, V.
    Cholewa, A.
    Contreras, J. G.
    Coughlan, J. A.
    Cozzika, G.
    Cvach, J.
    Dainton, J. B.
    Daum, K.
    Deak, M.
    de Boer, Y.
    Delcourt, B.
    Del Degan, M.
    Delvax, J.
    De Roeck, A.
    De Wolf, E. A.
    Diaconu, C.
    Dodonov, V.
    Dossanov, A.
    Dubak, A.
    Eckerlin, G.
    Efremenko, V.
    [J]. PHYSICS LETTERS B, 2009, 678 (05) : 450 - 458
  • [4] Search for flavor-changing-neutral-current D meson decays
    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.
    [J]. PHYSICAL REVIEW LETTERS, 2008, 100 (10)
  • [5] Measurement of the WZ → lvll cross section and limits on anomalous triple gauge couplings in p(p)over-bar collisions at √s=1.96 TeV
    Abazov, V. M.
    Abbott, B.
    Abolins, M.
    Acharya, B. S.
    Adams, M.
    Adams, T.
    Alexeev, G. D.
    Alkhazov, G.
    Alton, A.
    Alverson, G.
    Alves, G. A.
    Ancu, L. S.
    Aoki, M.
    Arnoud, Y.
    Arov, M.
    Askew, A.
    Asman, B.
    Atramentov, O.
    Avila, C.
    BackusMayes, J.
    Badaud, F.
    Bagby, L.
    Baldin, B.
    Bandurin, D. V.
    Banerjee, S.
    Barberis, E.
    Barfuss, A. -F.
    Baringer, P.
    Barreto, J.
    Bartlett, J. F.
    Bassler, U.
    Beale, S.
    Bean, A.
    Begalli, M.
    Begel, M.
    Belanger-Champagne, C.
    Bellantoni, L.
    Benitez, J. A.
    Beri, S. B.
    Bernardi, G.
    Bernhard, R.
    Bertram, I.
    Besancon, M.
    Beuselinck, R.
    Bezzubov, V. A.
    Bhat, P. C.
    Bhatnagar, V.
    Blazey, G.
    Blessing, S.
    Bloom, K.
    [J]. PHYSICS LETTERS B, 2011, 695 (1-4) : 67 - 73
  • [6] Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb-1 of p(p)over-bar collisions
    Abazov, V. M.
    Abbott, B.
    Abolins, M.
    Acharya, B. S.
    Adams, M.
    Adams, T.
    Alexeev, G. D.
    Alkhazov, G.
    Alton, A.
    Alverson, G.
    Alves, G. A.
    Ancu, L. S.
    Aoki, M.
    Arnoud, Y.
    Arov, M.
    Askew, A.
    Asman, B.
    Atramentov, O.
    Avila, C.
    BackusMayes, J.
    Badaud, F.
    Bagby, L.
    Baldin, B.
    Bandurin, D. V.
    Banerjee, S.
    Barberis, E.
    Barfuss, A. -F.
    Baringer, R.
    Barreto, J.
    Bartlett, J. F.
    Basslerr, U.
    Beale, S.
    Bean, A.
    Begalli, M.
    Begel, M.
    Belanger-Champagne, C.
    Bellantoni, L.
    Benitez, J. A.
    Beri, S. B.
    Bernardi, G.
    Bernhard, R.
    Bertram, I.
    Besancon, M.
    Beuselinck, R.
    Bezzubov, V. A.
    Bhat, P. C.
    Bhatnagar, V.
    Blazey, G.
    Blessing, S.
    Bloom, K.
    [J]. PHYSICS LETTERS B, 2010, 693 (02) : 81 - 87
  • [7] The upgraded DO detector
    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.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2006, 565 (02) : 463 - 537
  • [8] Search for single top quark production at LEP2
    Abbiendi, G
    Ainsley, C
    Åkesson, PF
    Alexander, G
    Allison, J
    Anagnostou, G
    Anderson, KJ
    Arcelli, S
    Asai, S
    Axen, D
    Azuelos, G
    Bailey, I
    Barberio, E
    Barlow, RJ
    Batley, RJ
    Behnke, T
    Bell, KW
    Bell, PJ
    Bella, G
    Bellerive, A
    Benelli, G
    Bethke, S
    Biebel, O
    Bloodworth, IJ
    Boeriu, O
    Bock, P
    Böhme, J
    Bonacorsi, D
    Boutemeur, M
    Braibant, S
    Brigliadori, L
    Brown, RM
    Burckhart, HJ
    Cammin, J
    Carnegie, RK
    Caron, B
    Carter, AA
    Carter, JR
    Chang, CY
    Charlton, DG
    Clarke, PEL
    Clay, E
    Cohen, I
    Couchman, J
    Csilling, A
    Cuffiani, M
    Dado, S
    Dallavalle, GM
    Dallison, S
    De Roeck, A
    [J]. PHYSICS LETTERS B, 2001, 521 (3-4) : 181 - 194
  • [9] Search for single top production via FCNC at LEP at √s=189-208 GeV
    Abdallah, J
    Abreu, R
    Adam, W
    Adzic, P
    Albrecht, T
    Alderweireld, T
    Alemany-Fernandez, R
    Allmendinger, T
    Allport, PP
    Amaldi, U
    Amapane, N
    Amato, S
    Anashkin, E
    Andreazza, A
    Andringa, S
    Anjos, SA
    Antilogus, P
    Apel, WD
    Arnoud, Y
    Ask, S
    Asman, B
    Augustin, JE
    Augustinus, A
    Baillon, P
    Ballestrero, A
    Bambade, P
    Barbier, R
    Bardin, D
    Barker, G
    Baroncelli, A
    Battaglia, M
    Baubillier, M
    Becks, KH
    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, PSL
    [J]. PHYSICS LETTERS B, 2004, 590 (1-2) : 21 - 34
  • [10] Search for flavor-changing neutral current decays of the top quark in p(p)over-bar collisions at √s = 1.8 TeV
    Abe, F
    Akimoto, H
    Akopian, A
    Albrow, MG
    Amendolia, SR
    Amidei, D
    Antos, J
    Aota, S
    Apollinari, G
    Asakawa, T
    Ashmanskas, W
    Atac, M
    Azfar, F
    Azzi-Bacchetta, P
    Bacchetta, N
    Badgett, W
    Bagdasarov, S
    Bailey, MW
    Bao, J
    de Barbaro, P
    Barbaro-Galtieri, A
    Barnes, VE
    Barnett, BA
    Barone, M
    Barzi, E
    Bauer, G
    Baumann, T
    Bedeschi, F
    Behrends, S
    Belforte, S
    Bellettini, G
    Bellinger, J
    Benjamin, D
    Benlloch, J
    Bensinger, J
    Benton, D
    Beretvas, A
    Berge, JP
    Berryhill, J
    Bertolucci, S
    Bettelli, S
    Bevensee, B
    Bhatti, A
    Biery, K
    Binkley, M
    Bisello, D
    Blair, RE
    Blocker, C
    Bodek, A
    Bokhari, W
    [J]. PHYSICAL REVIEW LETTERS, 1998, 80 (12) : 2525 - 2530