Production of WZ events in pp- collisions at √s=1.96 TeV and limits on anomalous WWZ couplings -: art. no. 141802

被引：13

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

Jesus, ACSA

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

Bernhard, R

Bertram, I

Besançon, M

Beuselinck, R

Bezzubov, VA

机构：

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

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

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

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

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

[6] Univ Alberta, Edmonton, AB, Canada

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

[8] McGill Univ, Montreal, PQ, Canada

[9] Inst High Energy Phys, Beijing, Peoples R China

[10] Univ Sci & Technol China, Hefei, 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, Ctr Particle Phys, Inst Phys, Prague, Czech Republic

[15] Univ San Francisco, Quito, Ecuador

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

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

[18] Uiv Mediterranee, CNRS, CPPM, IN2P3, Marseille, France

[19] CNRS, IN2P2, Lab Accelerateur Lineaire, Orsay, France

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

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

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

[23] Univ Haute Alsace, Mulhouse, France

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

[25] Univ Lyon 1, CNRS, IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France

[26] Rhein Westfal TH Aachen, Phys Inst A, Aachen, Germany

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

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

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

[30] Univ Munich, Munich, Germany

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

[32] Panjab Univ, Chandigarh 160014, India

[33] Univ Delhi, Delhi, India

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

[35] Univ Coll Dublin, Dublin, Ireland

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

[37] CINVESTAV, Mexico City, DF, Mexico

[38] Univ Amsterdam, NIKHEF, Amsterdam, Netherlands

[39] NIKHEF, FOM Inst, Amsterdam, Netherlands

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

[41] Joint Inst Nucl Res, Dubna, Russia

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

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

[44] Inst High Energy Phys, Protvino, Russia

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

[46] Royal Inst Technol, Stockholm, Sweden

[47] Lund Univ, Lund, Sweden

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

[49] Uppsala Univ, Uppsala, Sweden

[50] Univ Lancaster, Lancaster, England

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.95.141802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results from a search for WZ production with subsequent decay to l nu l'(l) over bar'(l and l' = e or mu) using 0.30 fb(-1) of data collected by the D0 experiment between 2002 and 2004 at the Fermilab Tevatron. Three events with WZ decay characteristics are observed. With an estimated background of 0.71 +/- 0.08 events, we measure the WZ production cross section to be 4.5(-2.6)(+3.8) pb, with a 95% C.L. upper limit of 13.3 pb. The 95% C.L. limits for anomalous WWZ couplings are found to be -2.0 <Delta kappa(Z)< 2.4 for form factor scale Lambda=1 TeV, and -0.48 <lambda(Z)< 0.48 and -0.49 <Delta g(1)(Z)< 0.66 for Lambda=1.5 TeV.

引用

页数：7

共 50 条

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