Measurement of the W + jets and Z + jets Cross Section with the ATLAS detector

TL;DR

This paper discusses the ATLAS detector's approach to measuring W/Z boson production with jets at 14 TeV, focusing on challenges, limitations, and implications for testing QCD and Monte Carlo models.

Contribution

It presents a detailed methodology for measuring W/Z + jets cross sections at high energy with simulated data, highlighting systematic and statistical considerations.

Findings

Feasibility of measuring W/Z + jets cross sections at 14 TeV

Assessment of statistical and systematic uncertainties

Insights into testing perturbative QCD predictions

Abstract

The study of W or Z boson with accompanying hadronic jets in final states is of high importance at hadron colliders both to understand Standard Model processes and to measure background to Beyond Standard Model physics searches. The presence of one or more jets in the final state increases the complexity for the reconstruction of leptons and of missing transverse energy. The ATLAS prospects for the cross section measurement of W/Z + jets events at 14 TeV center of mass energy and integrated luminosity of 1 fb^{-1} using fully simulated data are discussed. The statistical and systematic limitations are discussed in terms of probing perturbative QCD predictions and Monte Carlo generators.