TL;DR
This paper presents recent measurements of Z boson production with jets at the Fermilab Tevatron, providing critical tests of quantum chromodynamics and improving background modeling for new physics searches.
Contribution
It reports the most precise measurement of the non-perturbative form factor g2 and compares experimental data with advanced theoretical predictions for Z+jets production.
Findings
Best measurement of the non-perturbative form factor g2 to date
Differential cross sections test NLO pQCD predictions
Tree-level matrix element with matched parton shower improves modeling
Abstract
We report on recent Z (+jets) measurements from the Fermilab Tevatron proton anti-proton collider. A new D0 measurement of the transverse momentum of Z bosons yields the best measurement to date of the non-perturbative form factor, g2. The production of Z+jets is an major background to many rare signals, and is a vital testing ground for theoretical predictions. Measurements from CDF and D0 of differential cross sections in Z+jet production test NLO pQCD, and in the case of D0, the latest tree-level matrix element with matched parton shower calculations. Improving modelling of this signal will impact results from the Fermilab Tevatron and CERN LHC.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions