Cross Section Predictions of W ($W\to\ell^{\pm}\nu$) and Z ($Z\to\ell^{+}\ell^{-}$) Bosons in Association with Jets in pp Collisions

TL;DR

This paper predicts W and Z boson production with jets in proton-proton collisions at 14 TeV using Monte Carlo generators, compares these predictions with existing LHC data, and assesses their accuracy across different energies.

Contribution

It provides detailed cross section predictions for W and Z bosons with jets at 14 TeV and compares them with NNLO calculations and LHC measurements, enhancing validation of theoretical models.

Findings

NNLO QCD calculations agree well with 8 TeV CMS data.

Predictions are consistent with 7 TeV and 13 TeV ATLAS results.

The study improves understanding of boson+jets processes at high energies.

Abstract

Cross section predictions of W and Z bosons in association with jets (up to 6 jets, $W\to\ell^{\pm}\nu$ and $Z\to\ell^{\pm}$ where $\ell^{\pm}$=$e^{\pm}$ or $\mu^{\pm}$) in proton-proton collisions at $\sqrt{s}$=14 TeV is performed using Alpgen MC generator with CTEQ6L1 leading order parton distribution function. In addition, W and Z boson cross sections are obtained up to next to next to leading order (NNLO) QCD corrections using MCFM MC generator. To validate the predictions, a detailed comparison of NNLO QCD calculations with 8 TeV CMS results for total cross section is performed and a fiducial region is further defined to make a comparison of predictions with 7 TeV and 13 TeV ATLAS results.