Rights statement: © 2007 The American Physical Society
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Measurement of the p WZ+X cross section at sqrt(s)=1.96 TeV and limits on WWZ trilinear gauge couplings
AU - Abazov, V. M.
AU - Bertram, Iain
AU - Borissov, Guennadi
AU - Fox, Harald
AU - Ratoff, Peter
AU - Sopczak, Andre
AU - D0 Collaboration
N1 - © 2007 The American Physical Society
PY - 2007/12/28
Y1 - 2007/12/28
N2 - We present measurements of the process p[overline p]-->WZ+X-->[script-l][prime]nu[script-l][prime][script-l][overline [script-l]] at sqrt(s)=1.96 TeV, where [script-l] and [script-l][prime] 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<=lambdaZ<=0.21(DeltakappaZ=0) at the 95% C.L. for a form factor scale Lambda=2 TeV. Further, assuming that Deltag1Z=DeltakappaZ, we find -0.12<=DeltakappaZ<=0.29(lambdaZ=0) at the 95% C.L. These are the most restrictive limits on the WWZ couplings available to date.
AB - We present measurements of the process p[overline p]-->WZ+X-->[script-l][prime]nu[script-l][prime][script-l][overline [script-l]] at sqrt(s)=1.96 TeV, where [script-l] and [script-l][prime] 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<=lambdaZ<=0.21(DeltakappaZ=0) at the 95% C.L. for a form factor scale Lambda=2 TeV. Further, assuming that Deltag1Z=DeltakappaZ, we find -0.12<=DeltakappaZ<=0.29(lambdaZ=0) at the 95% C.L. These are the most restrictive limits on the WWZ couplings available to date.
U2 - 10.1103/PhysRevD.76.111104
DO - 10.1103/PhysRevD.76.111104
M3 - Journal article
VL - 76
SP - 111104
JO - Physical Review D
JF - Physical Review D
SN - 1550-7998
IS - 11
ER -