Measurement of Z boson + gamma production and search for anomalous triple gauge couplings in proton-antiproton collisions at center of mass energy = 1.96 TeV

We present a measurement of pp → Z gamma + X→e+ e-gamma + X production using proton-antiproton collision data collected at the Collider Detector at Fermilab at a center of mass energy of 1.96 TeV. Zgamma production provides a direct test of the triple neutral gauge couplings. A measurement of Zgamma production cross section and search for anomalous ZZgamma and Zgammagamma couplings are presented.; The data presented are from 1.1 fb-1 of p p integrated luminosity collected at the CDF Detector. Electrons from Z decays are selected with Et > 20 GeV. Photons (Et > 7 GeV) are required to be well-separated from the electrons. There are 390 eegamma candidate events found with 1.1 fb-1 of data, compared to the SM prediction of 375.3 +/- 25.2 events. The Standard Model prediction for the cross section for pp → e+e-gamma + X production at s = 1.96 TeV is 1.5 +/- 0.4 pb. The measured cross section is 4.7 +/- 0.9 pb. The cross section and kinematic distributions of the eegamma events are in good agreement with theoretical predictions.; Limits on the ZZgamma and Zgammagamma couplings are extracted using the photon Et distribution of end events with Meegamma > 100 GeV/c 2. These are the first limits measured using CBF Run II data. These limits provide important test of the interaction of the photon and the Z boson.