Zgamma Production in pbarp Collisions at sqrt(s)=1.8 TeV and Limits on Anomalous ZZgamma and Zgammagamma Couplings
D0 Collaboration
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.
Create a lesson
Related papers
A machine-learning method for the estimation of the background from jets misidentified as hadronic tau lepton decays
CMS Collaboration
Recent results in b → s\, transitions at LHCb
Juan Jose Juan Castella
Determination of U-spin breaking parameters with an amplitude analysis of the decay D0 KS,L0π+π-
BESIII Collaboration, M. Ablikim, M. N. Achasov et al.
Observation of a Threshold Enhancement in the π0π0 Mass Spectrum in ψ(3686) → π0π0J/ψ Decays
BESIII Collaboration, M. Ablikim, M. N. Achasov et al.
HepUKE: Uncertainty-aware Knowledge Evolution for High Energy Physics Analysis Agents
Zijie Shang, Ke Li, Junkun Jiao et al.
A compact, interrogable Tree Tensor Network Jet Tagger on Lund declustering trees
Fabrizio Napolitano, Luca Della Penna, Tommaso Tedeschi et al.