Measurement of the t(t)over-bar production cross section in p(p)over-bar collisions using dilepton events

被引：29

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.

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.

机构：

[1] Univ Buenos Aires, Buenos Aires, DF, Argentina

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

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

[4] Univ Estadual Paulista, Inst Fis Teor, Sao Paulo, Brazil

[5] Univ Alberta, Edmonton, AB, Canada

[6] Simon Fraser Univ, Burnaby, BC, Canada

[7] York Univ, Toronto, ON, Canada

[8] McGill Univ, Montreal, PQ, Canada

[9] Univ Sci & Technol China, Hefei, Peoples R China

[10] Univ Los Andes, Bogota, Colombia

[11] Charles Univ Prague, Ctr Particle Phys, Prague, Czech Republic

[12] Czech Tech Univ, 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, IN2P3 CNRS, Phys Corpusculaire Lab, Clermont Ferrand, France

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

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

[18] CNRS, IN2P3, Accelerateur Lineaire Lab, Orsay, France

[19] Univ Paris Sud, Orsay, France

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

[21] Univ Paris 07, Paris, France

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

[23] Univ Louis Pasteur Strasbourg 1, IPHC, Strasbourg, France

[24] Univ Haute Alsace, CNRS, IN2P3, Strasbourg, France

[25] Univ Lyon 1, CNRS, IPNL, IN2P3, Villeurbanne, France

[26] Univ Lyon, Lyon, France

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

[28] Univ Bonn, Inst Phys, Bonn, Germany

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

[30] Johannes Gutenberg Univ Mainz, Inst Phys, Mainz, Germany

[31] Univ Munich, Munich, Germany

[32] Univ Gesamthsch Wuppertal, Fachbereich Phys, Wuppertal, Germany

[33] Panjab Univ, Chandigarh, India

[34] Univ Delhi, Delhi, India

[35] Tata Inst Fundamental Res, Mumbai, India

[36] Natl Univ Ireland Univ Coll Dublin, Dublin, Ireland

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

[38] Sungkyunkwan Univ, Dept Chem, Suwon, South Korea

[39] CINVESTAV, Mexico City, DF, Mexico

[40] NIKHEF H, FOM Inst, Amsterdam, Netherlands

[41] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[42] Radboud Univ Nijmegen, NIKHEF, Nijmegen, Netherlands

[43] Joint Inst Nucl Res, Dubna, Russia

[44] Inst Theoret & Expt Phys, Moscow, Russia

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

[46] Inst High Energy Phys, Protvino, Russia

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

[48] Lund Univ, Lund, Sweden

[49] Royal Inst Technol, Stockholm, Sweden

[50] Univ Stockholm, Stockholm, Sweden

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 05期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.76.052006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the t (t) over bar pair production cross section in p (p) over bar collisions at root s=1.96 TeV utilizing approximately 425 pb(-1) of data collected with the D0 detector. We consider decay channels containing two high p(T) charged leptons (either e or mu) from leptonic decays of both top-daughter W bosons. These were gathered using four sets of selection criteria, three of which required that a pair of fully identified leptons (i.e., e mu, ee, or mu mu) be found. The fourth approach imposed less restrictive criteria on one of the lepton candidates and required that at least one hadronic jet in each event be tagged as containing a b quark. For a top quark mass of 175 GeV, the measured cross section is 7.4 +/- 1.4(stat)+/- 1.0(syst) pb and for the current Tevatron average top quark mass of 170.9 GeV, the resulting value of the cross section is 7.8 +/- 1.8(stat+syst) pb.

引用

页数：28

共 30 条

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