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
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.
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页数:7
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