Publications [#309243] of Seog Oh

Papers Published

1. Aaltonen; T; al, E, Limits on Anomalous Trilinear Gauge Couplings in ${Z}\gamma$ Events from $p\overline{p}$ Collisions at $\sqrt{s}=1.96\text{\,}\text{\,}\mathrm{TeV}$, Phys. Rev. Lett., vol. 107 no. 5 (July, 2011), pp. 051802, American Physical Society [doi]
   (last updated on 2026/01/19)

   Abstract:
   Using Zγ candidate events collected by the CDF detector at the Tevatron Collider, we search for potential anomalous (non-standard-model) couplings between the Z boson and the photon. Zγ couplings vanish at tree level and are heavily suppressed at higher orders; hence any evidence of couplings indicates new physics. Measurements are performed using data corresponding to an integrated luminosity of 4.9  fb(-1) in the Z→νν¯ decay channel and 5.1  fb(-1) in the Z→l(+)l(-) (l=μ, e) decay channels. The combination of these measurements provides the most stringent limits to date on Zγ trilinear gauge couplings. Using an energy scale of Λ=1.5  TeV to allow for a direct comparison with previous measurements, we find limits on the CP-conserving parameters that describe Zγ couplings to be |h(3)(γ,Z)|<0.022 and |h(4)(γ,Z)|<0.0009. These results are consistent with standard model predictions.