Study of Zγevents and limits on anomalous ZZγand Zγγcouplings in ppbar collisions at sqrt(s) = 1.96 TeV

Details Study of Zγevents and limits on anomalous ZZγand Zγγcouplings in ppbar collisions at sqrt(s) = 1.96 TeV Study of Zγevents and limits on anomalous ZZγand Zγγcouplings in ppbar collisions at sqrt(s) = 1.96 TeV

2005-02-18

arxiv.org/abs/hep-ex/0502036v1

Phys.Rev.Lett.95:051802,2005

Physics

High Energy Physics

High Energy Physics - Experiment

submitted to Phys. Rev. Letters

Scientific paper

10.1103/PhysRevLett.95.051802

We present a measurement of the Z\gamma production cross section and limits on anomalous ZZ\gamma and Z\gamma\gamma couplings for form-factor scales of Lambda = 750 and 1000 GeV. The measurement is based on 138 (152) candidate events in the ee\gamma (\mu\mu\gamma) final state using 320 (290) pb^{-1} of ppbar collisions at \sqrt{s} = 1.96 TeV. The 95% C.L. limits on real and imaginary parts of individual anomalous couplings are |h_{10,30}^{Z}|<0.23, |h_{20,40}^{Z}|<0.020, |h_{10,30}^{\gamma}|<0.23, and |h_{20,40}^{\gamma}|<0.019 for Lambda = 1000 GeV.

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