Production of WZ events in p anti-p collisions at s**(1/2) = 1.96-TeV and limits on anomalous WWZ couplings

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.141802· OSTI ID:15017233

Abazov, V M; Abbott, B; Abolins, M; Acharya, B S; Adams, M; Adams, T; Agelou, M; Agram, J -L; Ahn, S H; Ahsan, M; Alexeev, G D; Alkhazov, G; Alton, A; Alverson, G; Alves, G A; Anastasoaie, M; Andeen, T; Anderson, S; Andrieu, B; Arnoud, Y ; Askew, A

The authors present results from a search for WZ production with subsequent decay to {ell}{nu}{ell}'{bar {ell}}' ({ell} and {ell}' = e or {mu}) using 0.30 fb{sup -1} of data collected by the D0 experiment between 2002 and 2004 at the 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{sub -2.6}{sup +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}{sub Z} < 2.4 for form factor scale {Lambda} = 1 TeV, and -0.48 < {lambda}{sub Z} < 0.48 and -0.49 < {Delta}g{sub 1}{sup Z} < 0.66 for {Lambda} = 1.5 TeV.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC02-76CH03000
• OSTI ID: 15017233
• Report Number(s): FERMILAB-PUB-05-061-E; PRLTAO; arXiv eprint number hep-ex/0504019; TRN: US0602530
• Journal Information: Physical Review Letters, Vol. 95; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CROSS SECTIONS
DECAY
FERMILAB TEVATRON
FORM FACTORS
PRODUCTION
Experiment-HEP