The Transverse Momentum and Total Cross Section of E+ E- Pairs in the Z-Boson Region from P Anti-P Collisions at s**(1/2) = 1.8-Tev

TL;DR

This paper reports measurements of the transverse momentum distribution and total cross section of electron-positron pairs in the Z-boson mass region from proton-antiproton collisions at 1.8 TeV, comparing results with QCD predictions.

Contribution

First measurement of e+e- pair transverse momentum and cross section in the Z-boson region at 1.8 TeV, with comparison to advanced QCD calculations.

Findings

Total cross section measured as 248 ± 11 pb.

Transverse momentum distribution agrees with QCD predictions.

Data supports gluon resummation formalism at low transverse momentum.

Abstract

The transverse momentum and total cross section of e^+e^- pairs in the Z-boson region of 66<M_{ee}<116 GeV$/c^2$ from $p\bar{p}$ collisions at $\sqrt{s}=1.8$ TeV are measured using 110 pb^{-1} of collisions taken by the Collider Detector at Fermilab during 1992-1995. The total cross section is measured to be $248 \pm 11$ pb. The differential transverse momentum cross section is compared with calculations that match quantum chromodynamics perturbation theory at high transverse momentum with the gluon resummation formalism at low transverse momentum.