Measurement of the pp-→ WZ+X cross section at √s=1.96 TeV and limits on WWZ trilinear gauge couplings

Abazov, V. M. ; Mondal, N. K. ; et., al. (2007) Measurement of the pp-→ WZ+X cross section at √s=1.96 TeV and limits on WWZ trilinear gauge couplings Physical Review D - Particles, Fields, Gravitation and Cosmology, 76 (11). 111104_1-111104_8. ISSN 1550-7998

Full text not available from this repository.

Official URL: http://prd.aps.org/abstract/PRD/v76/i11/e111104

Related URL: http://dx.doi.org/10.1103/PhysRevD.76.111104

Abstract

We present measurements of the process pp- →WZ+X→l'ν 'μ- at √s=1.96TeV, where l and l' are electrons or muons. Using 1fb-1 of data from the D∅ experiment, we observe 13 candidates with an expected background of 4.5±0.6 events and measure a cross section σ (WZ)=2.7-1.3+1.7pb. From the number of observed events and the Z boson transverse momentum distribution, we limit the trilinear WWZ gauge couplings to -0.17≤ λ Z≤0.21(Δκ Z=0) at the 95% C.L. for a form factor scale λ =2TeV. Further, assuming that Δg1Z=Δκ Z, we find -0.12≤Δκ Z≤0.29(λ Z=0) at the 95% C.L. These are the most restrictive limits on the WWZ couplings available to date.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:89846
Deposited On:02 May 2012 13:01
Last Modified:02 May 2012 13:01

Repository Staff Only: item control page