Rapidity Correlations in $Wγ$ Production at the Tevatron

Baur, U.; Errede, S.; Landsberg, G.

Rapidity Correlations in $Wγ$ Production at the Tevatron

Authors

Baur, U.

Errede, S.

Landsberg, G.

Description

We study the correlation of photon and charged lepton pseudorapidities, $η(γ)$ and $η(\ell)$, $\ell=e,\,μ$, in $p\bar p\rightarrow W^\pmγ+X\rightarrow \ell^\pm p\llap/_Tγ+X$ at the Tevatron. In the Standard Model, the $Δη(γ,\ell)= η(γ) - η(\ell)$ differential cross section is found to exhibit a pronounced dip at $Δη(γ,\ell) \approx \mp 0.4$, which originates from the radiation zero present in $q\bar q'\rightarrow Wγ$. The sensitivity of the $Δη(γ,\ell)$ distribution to higher order QCD corrections, non-standard $WWγ$ couplings, and the cuts imposed is explored. The $Δη(γ,\ell)$ distribution is compared with other quantities which are sensitive to the radiation zero.
LaTeX, 9 pages, 3 postscript figures in a separate uuencoded file, FSU-HEP-930727, to appear in the Proceedings of the Workshop ``Physics at Current Accelerators and the Supercollider'', Argonne National Laboratory, June~2 --~5, 1993