Differential Production Cross Section of Z Bosons as a Function of Transverse Momentum at sqrt{s}=1.8 TeV

TL;DR

A measurement of the transverse momentum distribution of Z bosons produced in p&pmacr; collisions at sqrt[s] = 1.8 TeV from data collected by the DO experiment at the Fermilab Tevatron Collider is presented.

Abstract

We present a measurement of the transverse momentum distribution of Z bosons produced in ppbar collisions at sqrt{s}=1.8 TeV using data collected by the D0 experiment at the Fermilab Tevatron Collider during 1994--1996. We find good agreement between our data and a current resummation calculation. We also use our data to extract values of the non-perturbative parameters for a particular version of the resummation formalism, obtaining significantly more precise values than previous determinations.

Figures (2)

• Figure 1: The differential cross section as a function of $p_T$ compared to the resummation calculation with three different published parameterizations of the non-perturbative region and to the fixed-order calculation. Also shown are the fractional differences between the data and each of the resummation predictions.
• Figure 2: A comparison of the data to the resummed and fixed-order (${{\cal O}(\alpha^2_s)}$) calculations. Also shown are the fractional differences between the data and the resummed and fixed-order calculations. The uncertainties shown include both statistical and systematic uncertainties (other than an overall normalization uncertainty due to the luminosity uncertainty).