W, Z + Jets production with CMS detector

TL;DR

This paper reports on measurements of jet production associated with W and Z bosons in proton-proton collisions at 7 TeV, using CMS data, focusing on cross section ratios for different jet multiplicities.

Contribution

It provides the first detailed measurement of jet multiplicity ratios in W/Z production at 7 TeV with CMS data, enhancing understanding of QCD processes.

Findings

Measured ratios s(V + >= n jets)/s(V) and s(V + >= n jets)/s(V + >= (n - 1) jets)

Results agree with theoretical predictions within uncertainties

Provides data for tuning QCD models in high-energy collisions

Abstract

We present a study of jet production in association with W and Z bosons in proton-proton collisions at a centre-of-mass energy of 7 TeV using the full 2010 data set collected by CMS corresponding to an integrated luminosity of (35.9 +/- 1.4) inverse picobarn. We report the measurement of ratios s(V + >= n jets)/s(V) and s(V + >= n jets)/s(V + >= (n - 1) jets), where V represents either a W or a Z, s stands for the cross section and n stands for the number of jets.