Measurement of z boson transverse momentum in proton - anti-proton collisions at √s = 1.96 TeV

Abstract

This dissertation describes a measurement of the shape of the boson transverse momentum distribution in pp → Z/γ * → e + e − + X events at a center-of-mass energy of 1.96 TeV. The measurement is made for events with electron-positron mass between 70 < M ee < 110 GeV/c 2 and uses 976 pb −1 of data collected at the Fermilab Tevatron collider with the DØ detector. The shape is measured both for the inclusive sample and for the subset of events containing a boson with large rapidity. The large-rapidity distribution shows better agreement with theory when the calculation is done using traditional Collins-Soper-Sterman resummation than when using a recent resummed form factor with modifications in the small-x region.

The Higgs boson in the Standard Model theoretical constraints and a direct search in the wh channel at the Tevatron

“…We compensate for this mismodeling by reweighting the simulated events [76]. The correction is derived from the measurement of the Z boson transverse momentum in Z → e e events in the RunIIa and RunIIb data samples [77]. The reweighting of the W p T distribution is explained in 6.5.5.…”

Measurement of the Top Quark Mass using Dilepton Events and a Neutrino Weighting Algorithm with the D0 Experiment at the Tevatron (Run II)

“…The electron resolution is studied using Z → ee events [66]. The parametrization of the resolution depends on the electron p T and rapidity.…”