$W\gamma$ and $Z\gamma$ Production at Tevatron

TL;DR

This paper reports measurements of $W ext{ } ext{and} ext{ }Z ext{ } ightarrow ext{ } ext{photon}$ production at Tevatron, testing non-abelian gauge couplings predicted by the Standard Model through collider data analysis.

Contribution

First direct measurements and limits on $WW ext{ } ext{and} ext{ }Z ext{ } ext{couplings}$ involving photons at Tevatron energies.

Findings

Measured $WW ext{ } ext{couplings}$ consistent with Standard Model

Set limits on anomalous $ZZ ext{ } ext{and} ext{ }Z ext{ } ext{couplings}$

Analyzed $par{p}$ collision data at $ ext{ } oot s=1.8 ext{ TeV}$

Abstract

We present results from CDF and D\O\ on $W\gamma$ and $Z\gamma$ productions in $p\bar{p}$ collisions at $\sqrt{s}=1.8~{\rm TeV}.$ The goal of the analyses is to test the non-abelian self-couplings of the $W$, $Z$ and photon, one of the most direct consequences of the $SU(2)_L\otimes U(1)_Y$ gauge symmetry. We present direct measurements of $WW\gamma$ couplings and limits on $ZZ\gamma$ and $Z\gamma\gamma$ couplings, based on $p\bar{p}\rightarrow \ell\nu\gamma + X$ and $p\bar{p}\rightarrow \ell\ell\gamma+X$ events, respectively, observed during the 1992--1993 run of the Fermilab Tevatron Collider.