Measurement of the top quark mass and top-antitop production cross section from dilepton events at the Collider Detector at Fermilab

TL;DR

This paper reports the measurement of the top quark mass and the top-antitop production cross section using dilepton events at the Fermilab Tevatron Collider, based on 109 pb^{-1} of data, with observed candidate events and background estimates.

Contribution

First measurement of the top quark mass and production cross section from dilepton events at Fermilab Tevatron.

Findings

Top quark mass estimated at 161±17(stat)±10(syst.) GeV/c^2.

Top-antitop production cross section measured at 8.2+4.4-3.4 pb.

Observed candidate events consistent with Standard Model predictions.

Abstract

We present an analysis of dilepton events originating from top-antitop production in proton-antiproton collisions at sqrt{s}=1.8 TeV at the Fermilab Tevatron Collider. The sample corresponds to an integrated luminosity of 109+-7 pb^{-1}. We observe 9 candidate events, with an estimated background of 2.4+-0.5 events. We determine the mass of the top quark to be M_top = 161+-17(stat.)+-10(syst.) GeV/c^2. In addition we measure a top-antitop production cross section of 8.2+4.4-3.4 pb (where M_top = 175 GeV/c^2 has been assumed for the acceptance estimate).