Gluon Fusion induced Zg and Zgg Productions in the Standard Model at the LHC

TL;DR

This paper calculates the contributions of gluon-induced Zg and Zgg productions at the LHC, providing cross sections and distributions, and compares them with existing QCD results, revealing a 1% contribution level.

Contribution

It presents the first detailed calculations of gluon-induced Zg and Zgg processes at the LHC, including cross sections and distributions, and compares them with standard QCD predictions.

Findings

Gluon-induced Zg and Zgg contribute about 1% to Z+jets processes.

Differential distributions are provided for these processes.

Results are relevant for precision measurements at the LHC.

Abstract

We report calculations of the gluon induced Zg and Zgg productions in the Standard Model at the LHC operating at both 7 TeV and 14 TeV collision energy. We present total cross sections and differential distributions of the processes and compare them with the leading and next-to-leading order QCD pp -> Z+1 jet, Z+2 jets results. Our results show that the gluon induced Zg and Zgg productions contribute to pp -> Z+1 jet, Z+2 jets at 1% level.