Measurement of σ(p(p)over-bar → Z plus X)Br(Z → τ+τ-) at √s=1.96 TeV

被引：20

作者：

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

Abbott, B.

Abolins, M.

Acharya, B. S.

Adams, M.

Adams, T.

Aguilo, E.

Ahsan, M.

Alexeev, G. D.

Alkhazovn, G.

Alton, A.

Alverson, G.

Alves, G. A.

Anastasoaie, M.

Ancu, L. S.

Andeen, T.

Andrieu, B.

Anzelc, M. S.

Aoki, M.

Arnoud, Y.

Arov, M.

Arthaud, M.

Askew, A.

Asman, B.

Jesus, A. C. S. Assis

Atramentov, O.

Avila, C.

Badaud, F.

Bagby, L.

Baldin, B.

Bandurin, D. V.

Banerjee, P.

Banerjee, S.

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.

Bellantoni, L.

Bellavance, A.

Benitez, J. A.

Beri, S. B.

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, BR-20550011 Rio De Janeiro, Brazil

[4] Univ Fed ABC, Santo Andre, Brazil

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

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

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

[8] Univ Alberta, Edmonton, AB, 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, CR-16635 Prague, Czech Republic

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

[15] Univ San Francisco Quito, Quito, Ecuador

[16] Univ Blaise Pascal, CNRS, IN2P3, LPC, Clermont Ferrand, France

[17] Univ Grenoble 1, CNRS, IN2P3, Inst Natl Polytech Grenoble,LPC, F-38031 Grenoble, France

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

[19] Univ Paris Sud, CNRS, IN2P3, LAL, Orsay, France

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

[21] Univ Paris 07, Paris, France

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

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

[24] Univ Lyon, Lyon, France

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

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

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

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

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

[30] Univ Munich, Munich, Germany

[31] Univ Wuppertal, Fachbereich Phys, Wuppertal, Germany

[32] Panjab Univ, Chandigarh 160014, India

[33] Univ Delhi, Delhi 110007, India

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

[35] Univ Coll Dublin, Dublin 2, Ireland

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

[37] Sungkyunkwan Univ, Suwon, South Korea

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

[39] FOM Inst NIKHEF, Amsterdam, Netherlands

[40] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

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

[42] Joint Inst Nucl Res, Dubna, Russia

[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] Stockholm Univ, S-10691 Stockholm, Sweden

[48] Royal Inst Technol, Stockholm, Sweden

[49] Lund Univ, Lund, Sweden

[50] Uppsala Univ, Uppsala, Sweden

来源：

PHYSICS LETTERS B | 2009年 / 670卷 / 4-5期

基金：

瑞典研究理事会; 加拿大自然科学与工程研究理事会; 巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/j.physletb.2008.11.010

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a measurement of the cross section for Z boson production times the branching fraction to tau lepton pairs sigma(p (p) over bar -> Z + X)Br(Z -> tau(+)tau(-)) in p (p) over bar collisions at root s = 1.96 TeV. The measurement is performed in the channel in which one tau lepton decays into a muon and neutrinos. and the other tau lepton decays hadronically or into an electron and neutrinos. The data sample corresponds to an integrated luminosity of 1.0 fb(-1) collected with the DO detector at the Fermilab Tevatron Collider. The sample contains 1511 candidate events with an estimated 20% background from jets or muons misidentified as tau leptons. We obtain sigma . Br = 240 +/- 8 (star) +/- 12 (sys) +/- 15 (lum) pb, which is consistent with the standard model prediction. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：292 / 299

页数：8

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