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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/22988
Title: 
Measurement of the p(p)over-bar -> WZ+X cross section at root s=1.96 TeV and limits on WWZ trilinear gauge couplings
Author(s): 
Institution: 
  • Joint Inst Nucl Res
  • University of Washington
  • University of Virginia (UVA)
  • Rice University
  • So Methodist Univ
  • Univ Texas Arlington
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  • Oklahoma State Univ
  • University of Oklahoma
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  • Brookhaven Natl Lab
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  • Fermilab Natl Accelerator Lab
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  • University of California, Riverside (UCR)
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  • University of Manchester
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  • CINVESTAV
  • Sungkyunkwan Univ
  • Korea University
  • Univ Coll Dublin
  • Tata Inst Fundamental Res
  • University of Delhi
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  • Univ Bonn
  • RWTH Aachen University
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  • Universidade Estadual Paulista (UNESP)
  • Centro Brasileiro de Pesquisas Físicas (CBPF)
  • Univ Buenos Aires
  • Universidade Federal do Rio de Janeiro (UFRJ)
ISSN: 
1550-7998
Abstract: 
We present measurements of the process p (P) over bar -> WZ + X -> l 'nu(l ')l (l) over bar at root s = 1:96 TeV,where l and l ' are electrons or muons. Using 1 fb(-1) of data from the D0 experiment, we observe 13 candidates with an expected background of 4.5 +/- 0.6 events and measure a cross section sigma(WZ) = 2.7(-1.3)(+1.7) pb. From the number of observed events and the Z boson transverse momentum distribution, we limit the trilinear WWZ gauge couplings to -0: 17 <= lambda(Z) <= 0.21 (Delta k(Z) <= 0.29(lambda(Z) = 0) at the 95% C.L. for a form factor scale Lambda = 2 TeV. Further, assuming that Delta g(1)(Z) = Delta k(Z), we find -0.12 <= Delta k(Z) <= 0.29(lambda(Z) = 0) at the 95% C. L. These are the most restrictive limits on the WWZ couplings available to date.
Issue Date: 
1-Dec-2007
Citation: 
Physical Review D. College Pk: Amer Physical Soc, v. 76, n. 11, 8 p., 2007.
Time Duration: 
8
Publisher: 
Amer Physical Soc
Source: 
http://dx.doi.org/10.1103/PhysRevD.76.111104
URI: 
http://hdl.handle.net/11449/22988
Access Rights: 
Acesso restrito
Type: 
outro
Source:
http://repositorio.unesp.br/handle/11449/22988
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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