QCD Corrections to Hadronic $W\gamma$ Production with Non-standard $WW\gamma$ Couplings

Abstract

The process $p \pbar \rightarrow W^{\pm}γ+ X \rightarrow \ell^\pm νγ+ X$ is calculated to $\mathcal{O}({\alpha }_s)$ for general $CP$ conserving $WW\gamma$ couplings. At the Tevatron center of mass energy, the QCD corrections to $W\gamma$ production are modest, and the Born and inclusive $\mathcal{O}({\alpha }_s)$ cross sections have similar sensitivities to the effects of anomalous couplings. At supercollider energies, the inclusive QCD corrections are large at high photon transverse momenta, reducing the sensitivity to non-standard $WW\gamma$ couplings by up to a factor~2. The size of the QCD corrections can be reduced significantly, and a large fraction of the sensitivity lost can be regained, if a jet veto is imposed.

arXiv comment52 pages, REVTEX 2.0, 18 figures (uuencoded postscript files)

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