Measurement of σ(p(p)over-bar→Z)•Br(Z→ττ) at √s=1.96 TeV -: art. no. 072004

被引：31

作者：

Abazov, VM ^{[1
]}

Abbott, B

Abolins, M

Acharya, BS

Adams, M

Adams, T

Agelou, M

Agram, JL

Ahn, SH

Ahsan, M

Alexeev, GD

Alkhazov, G

Alton, A

Alverson, G

Alves, GA

Anastasoaie, M

Andeen, T

Anderson, S

Andrieu, B

Arnoud, Y

Askew, A

Åsman, B

Atramentov, O

Autermann, C

Avila, C

Badaud, F

Baden, A

Baldin, B

Balm, PW

Banerjee, S

Barberis, E

Bargassa, P

Baringer, P

Barnes, C

Barreto, J

Bartlett, JF

Bassler, U

Bauer, D

Bean, A

Beauceron, S

Begel, M

Bellavance, A

Beri, SB

Bernardi, G

Bertram, I

Besançon, M

Beuselinck, R

Bezzubov, VA

Bhat, PC

Bhatnagar, V

机构：

[1] Joint Nucl Res Inst, Dubna, Russia

[2] Univ Oklahoma, Norman, OK 73019 USA

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

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

[5] Univ Illinois, Chicago, IL 60607 USA

[6] Florida State Univ, Tallahassee, FL 32306 USA

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

[8] Univ Louis Pasteur Strasbourg 1, IReS, IN2P3, CNRS, Strasbourg, France

[9] Univ Haute Alsace, Mulhouse, France

[10] Korea Univ, Korea Detector Lab, Seoul 136701, South Korea

[11] Kansas State Univ, Manhattan, KS 66506 USA

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

[13] Univ Michigan, Ann Arbor, MI 48109 USA

[14] Northeastern Univ, Boston, MA 02115 USA

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

[16] Univ Nijmegen, NIKHEF, Nijmegen, Netherlands

[17] Northwestern Univ, Evanston, IL 60208 USA

[18] Univ Arizona, Tucson, AZ 85721 USA

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

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

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

[22] Rice Univ, Houston, TX 77005 USA

[23] Lund Univ, Lund, Sweden

[24] Royal Inst Technol, Stockholm, Sweden

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

[26] Uppsala Univ, Uppsala, Sweden

[27] Iowa State Univ, Ames, IA 50011 USA

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

[29] Univ Los Andes, Bogota, Colombia

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

[31] Univ Maryland, College Pk, MD 20742 USA

[32] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

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

[34] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[35] Univ Kansas, Lawrence, KS 66045 USA

[36] Univ London Imperial Coll Sci Technol & Med, London, England

[37] Indiana Univ, Bloomington, IN 47405 USA

[38] Univ Rochester, Rochester, NY 14627 USA

[39] Univ Nebraska, Lincoln, NE 68588 USA

[40] Panjab Univ, Chandigarh 160014, India

[41] Univ Lancaster, Lancaster, England

[42] Inst High Energy Phys, Protvino, Russia

[43] Univ Munich, Munich, Germany

[44] Boston Univ, Boston, MA 02215 USA

[45] No Illinois Univ, De Kalb, IL 60115 USA

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

[47] Univ Notre Dame, Notre Dame, IN 46556 USA

[48] Columbia Univ, New York, NY 10027 USA

[49] Univ Texas, Arlington, TX 76019 USA

[50] Univ Washington, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.71.072004

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 production times the branching fraction to tau leptons, sigma.Br(Z ->tau(+)tau(-)), in p (p) over bar collisions at root s=1.96 TeV in the channel in which one tau decays into mu nu(mu)nu(tau), and the other into hadrons+nu(tau) or e nu(e)nu(tau). The data sample corresponds to an integrated luminosity of 226 pb(-1) collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain sigma.Br(Z ->tau(+)tau(-)) = 237 +/- 15(stat)+/- 18(sys)+/- 15(lum)pb, in agreement with the standard model prediction.

引用

页码：1 / 7

页数：7

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