Study of Zγ Events and Limits on Anomalous ZZγ and Zγγ Couplings in pp Collisions at s~(1/2) = 1.96 Te V

摘要

We present a measurement of the Zγ production cross section and limits on anomalous ZZγ and Zγγ couplings for form-factor scales of Λ = 750 and 1000 GeV. The measurement is based on 138 (152) candidates in the eeγ (μμγ) final state using 320(290) pb~(-1) of pp collisions at s~(1/2) = 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)~γ| < 0.23, and |h_(20,40)~γ| < 0.019 for Λ = 1000 GeV.