Zgamma Production in pbarp Collisions at sqrt(s)=1.8 TeV and Limits on Anomalous ZZgamma and Zgammagamma Couplings
Abstract
We present a study of Z +gamma + X production in p-bar p collisions at sqrtS=1.8 TeV from 97 (87) pb-1 of data collected in the eegamma (mumugamma) decay channel with the D0 detector at Fermilab. The event yield and kinematic characteristics are consistent with the Standard Model predictions. We obtain limits on anomalous ZZgamma and Zgammagamma couplings for form factor scales Lambda = 500 GeV and Lambda = 750 GeV. Combining this analysis with our previous results yields 95% CL limits |hZ30| < 0.36, |hZ40| < 0.05, |hgamma30| < 0.37, and |hgamma40| < 0.05 for a form factor scale Lambda=750 GeV.
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