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

被引：57

作者：

Abazov, V. M. ^{[40
]}

Abbott, B. ^{[78
]}

Abolins, M. ^{[1
]}

Acharya, B. S. ^{[33
]}

Adams, M. ^{[54
]}

Adams, T. ^{[52
]}

Alexeev, G. D. ^{[40
]}

Alkhazov, G. ^{[44
]}

Alton, A. ^{[67
]}

Alverson, G. ^{[66
]}

Alves, G. A. ^{[3
]}

Ancu, L. S. ^{[39
]}

Aoki, M. ^{[53
]}

Arnoud, Y. ^{[16
]}

Arov, M. ^{[63
]}

Askew, A. ^{[52
]}

Asman, B. ^{[45
,46
]}

Atramentov, O. ^{[70
]}

Avila, C. ^{[10
]}

BackusMayes, J. ^{[85
]}

Badaud, F. ^{[15
]}

Bagby, L. ^{[53
]}

Baldin, B. ^{[53
]}

Bandurin, D. V. ^{[52
]}

Banerjee, S. ^{[33
]}

Barberis, E. ^{[66
]}

Barfuss, A. -F. ^{[17
]}

Baringer, R. ^{[61
]}

Barreto, J. ^{[3
]}

Bartlett, J. F. ^{[53
]}

Basslerr, U. ^{[21
]}

Beale, S. ^{[7
,8
]}

Bean, A. ^{[61
]}

Begalli, M. ^{[4
]}

Begel, M. ^{[76
]}

Belanger-Champagne, C. ^{[45
,46
]}

Bellantoni, L. ^{[53
]}

Benitez, J. A. ^{[1
]}

Beri, S. B. ^{[31
]}

Bernardi, G. ^{[19
,20
]}

Bernhard, R. ^{[26
]}

Bertram, I. ^{[47
]}

Besancon, M. ^{[21
]}

Beuselinck, R. ^{[48
]}

Bezzubov, V. A. ^{[43
]}

Bhat, P. C. ^{[53
]}

Bhatnagar, V. ^{[31
]}

Blazey, G. ^{[55
]}

Blessing, S. ^{[52
]}

Bloom, K. ^{[69
]}

机构：

[1] Michigan State Univ, E Lansing, MI 48824 USA

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

[14] Univ San Francisco Quito, Quito, Ecuador

[15] Univ Blaise Pascal, LPC, CNRS, IN2P3, Clermont, France

[16] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPSC, Grenoble, France

[17] Aix Marseille Univ, CNRS, IN2P3, CPPM, Marseille, France

[18] Univ Paris 11, CNRS, IN2P3, LAL, F-91405 Orsay, France

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

[20] Univ Paris 07, CNRS, IN2P3, LPNHE, Paris, France

[21] SPP, Irfu, CEA, Saclay, France

[22] Univ Strasbourg, CNRS, IN2P3, IPHC, Strasbourg, France

[23] Univ Lyon, Lyon, France

[24] Univ Lyon 1, CNRS, IN2P3, IPNL, F-69622 Villeurbanne, France

[25] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

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

[27] Univ Gottingen, Inst Phys 2, Gottingen, Germany

[28] Johannes Gutenberg Univ Mainz, Inst Phys, D-6500 Mainz, Germany

[29] Univ Munich, Munich, Germany

[30] Berg Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[31] Panjab Univ, Chandigarh 160014, India

[32] Univ Delhi, Delhi 110007, India

[33] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[34] Univ Coll Dublin, Dublin 2, Ireland

[35] Korea Univ, Korea Detector Lab, Seoul, South Korea

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

[37] FOM Inst NIKHEF, Amsterdam, Netherlands

[38] Univ Amsterdam NIKHEF, Amsterdam, Netherlands

[39] Radboud Univ Nijmegen, NIKHEF, NL-6525 ED Nijmegen, Netherlands

[40] Joint Inst Nucl Res, Dubna, Russia

[41] Inst Theoret & Expt Phys, Moscow 117259, Russia

[42] Moscow MV Lomonosov State Univ, Moscow, Russia

[43] Inst High Energy Phys, Protvino, Russia

[44] Petersburg Nucl Phys Inst, St Petersburg, Russia

[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

来源：

PHYSICS LETTERS B | 2010年 / 693卷 / 02期

基金：

美国国家科学基金会; 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：

Top quark; Single top; FCNC; Flavor-changing neutral current; Quark-gluon coupling; Tevatron; Proton-antiproton collider; TOPCOLOR; STANDARD; PHYSICS; DECAYS;

D O I：

10.1016/j.physletb.2010.08.011

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 via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb(-1) of integrated luminosity collected with the DO detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma(tgu) < 0.20 pb and sigma(tgc) < 0.27 pb. These correspond to limits on the top quark decay branching fractions of B(t -> gu) < 2.0 x 10(-4) and B(t -> gc) < 3.9 x 10(-3). (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：81 / 87

页数：7

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Amidi, E
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Balamurali, V
Balderston, J
Baldin, B
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Bantly, J
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Bazizi, K
Belyaev, A
Beri, SB
Bertram, I
Bezzubov, VA
Bhat, PC
Bhatnagar, V
Bhattacharjee, M
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Bojko, NI
Borcherding, F
Borders, J
Boswell, C
Brandt, A
Brock, R
Bross, A
Buchholz, D
Burtovoi, VS
Butler, JM
Carvalho, W
Casey, D
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CastillaValdez, H
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Alexeev, G. D.
Alkhazov, G.
Alton, A.
Alverson, G.
Alves, G. A.
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Arov, M.
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Asman, B.
Atramentov, O.
Avila, C.
BackusMayes, J.
Badaud, F.
Bagby, L.
Baldin, B.
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Barberis, E.
Baringer, P.
Barreto, J.
Bartlett, J. F.
Bassler, U.
Bazterra, V.
Beale, S.
Bean, A.
Begalli, M.
Begel, M.
Belanger-Champagne, C.
Bellantoni, L.
Beri, S. B.
Bernardi, G.
Bernhard, R.
Bertram, I.
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Beuselinck, R.
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Adelman, J.
Alvarez Gonzalez, B.
Amerio, S.
Amidei, D.
Anastassov, A.
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A.
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W.
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Bae, T.
Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A.
Barria, P.
Bartos, P.
Bauce, M.
Bedeschi, F.
Behari, S.
Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
Bhatti, A.
Bisello, D.
Bizjak, I.
Bland, K. R.
Blumenfeld, B.
Bocci, A.
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A.
Brigliadori, L.
Bromberg, C.
Brucken, E.
Budagov, J.
Budd, H. S.
Burkett, K.
Busetto, G.
Bussey, P.
Buzatu, A.
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