W and Z properties at the Tevatron

TL;DR

This paper reports on measurements of W and Z boson properties at the Tevatron, testing production mechanisms and electroweak parameters, providing data to refine theoretical models and Parton Distribution Functions.

Contribution

It presents new measurements of boson production and decay properties that improve constraints on electroweak theory and parton distribution functions, using data from CDF and D0 collaborations.

Findings

Z rapidity and W charge asymmetry measurements constrain PDFs.

Z transverse momentum distribution tests QCD predictions.

W width measurement refines electroweak parameter estimates.

Abstract

I present measurements of W and Z boson properties by the CDF and D0 collaborations. This includes measurements that test the production mechanism of the bosons and precision measurements of electroweak parameters. In the former category I present CDF measurements of the Z rapidity and W charge asymmetry that will help further constrain Parton Distribution Functions in future global fits, and a D0 measurement of the Z transverse momentum distribution that can be used to test the predictions of quantum-chromodynamics. In the later category I present a D0 measurement of the Z/gamma* forward-backward asymmetry and the subsequent extraction sin2theta_W = 0.2327 +/- 0.0018 (stat.) +/- 0.0006 (syst.) and a CDF measurement of the W width Gamma_W using a fit to the tail of the W transverse mass distribution in W->enu and W->munu events that yields Gamma_W = 2032 +/- 73 MeV.