Multivariate searches for single top quark production with the D0 detector

被引：14

作者：

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

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.

Assis Jesus, A. C. S.

Atramentov, O.

Autermann, C.

Avila, C.

Ay, C.

Badaud, F.

Baden, A.

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.

Belanger-Champagne, C.

Bellavance, A.

Benitez, J. A.

Beri, S. B.

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 Fed Rio de Janeiro, BR-21941 Rio De Janeiro, Brazil

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

[6] Univ Alberta, Edmonton, AB T6G 2M7, Canada

[7] Simon Fraser Univ, Burnaby, BC V5A 1S6, Canada

[8] York Univ, Toronto, ON M3J 2R7, Canada

[9] McGill Univ, Montreal, PQ H3A 2T5, Canada

[10] Inst High Energy Phys, Beijing 100039, Peoples R China

[11] Univ Sci & Technol China, Hefei 230026, Peoples R China

[12] Univ Los Andes, Bogota, Colombia

[13] Charles Univ Prague, Ctr Particle Phys, CR-11636 Prague 1, Czech Republic

[14] Czech Tech Univ, CR-16635 Prague, Czech Republic

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

[16] Univ San Francisco Quito, Quito, Ecuador

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

[18] Univ Grenoble 1, CNRS, IN2P3, Lab Phys Subatom & Cosmol, F-38041 Grenoble, France

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

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

[21] Univ Paris 06, CNRS, IN2P3, LPNHE, F-75252 Paris 05, France

[22] Univ Paris 07, CNRS, IN2P3, LPNHE, F-75221 Paris 05, France

[23] CEA, DAPNIA, Serv Phys Particules, Saclay, France

[24] Univ Strasbourg, CNRS, IN2P3, IReS, F-67070 Strasbourg, France

[25] Univ Haut Alsace, Mulhouse, France

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

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

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

[29] Univ Freiburg, Inst Phys, D-7800 Freiburg, Germany

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

[31] Univ Munich, Munich, Germany

[32] Berg Univ Wuppertal, Fachbereich Phys, D-42097 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 440746, South Korea

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

[40] FOM, Inst NIKHEF, NL-1098 SJ Amsterdam, Netherlands

[41] Univ Amsterdam, NIKHEF, NL-1012 WX Amsterdam, Netherlands

[42] Radboud Univ Nijmegen, NIKHEF, 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, S-22100 Lund, Sweden

[48] Royal Inst Technol, Stockholm, Sweden

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

[50] Uppsala Univ, S-75105 Uppsala, Sweden

来源：

PHYSICAL REVIEW D | 2007年 / 75卷 / 09期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.75.092007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a search for electroweak production of single top quarks in the s-channel (p (p) over bar -> t (b) over bar +X) and t-channel (p (p) over bar -> tq (b) over bar +X) modes. We have analyzed 230 pb(-1) of data collected with the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy of root s=1.96 TeV. No evidence for a single top quark signal is found. We set 95% confidence level upper limits on the production cross sections, based on binned likelihoods formed from a neural network output. The observed (expected) limits are 6.4 pb (4.5 pb) in the s-channel and 5.0 pb (5.8 pb) in the t-channel.

引用

页数：27

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