Double Parton Scattering of Weak Gauge Boson Productions at the 13 TeV and 100 TeV Proton-Proton Colliders

TL;DR

This paper investigates double parton scattering involving electroweak gauge bosons at 13 TeV and 100 TeV colliders, highlighting the $Z ext{-}jj$ channel for measuring effective cross section and proposing combined analysis for testing its universality.

Contribution

It introduces the $Z ext{-}jj$ channel as an optimal process for measuring $\sigma_{ m eff}$ and emphasizes the improved accuracy at 100 TeV colliders, proposing a combined analysis for universality testing.

Findings

$Z\text{-}jj$ channel is optimal for $\sigma_{ m eff}$ measurement.

Measurement accuracy improves significantly at 100 TeV colliders.

Combined analysis can test the universality of $\sigma_{ m eff}$.

Abstract

We study double parton scattering (DPS) processes involving electroweak gauge bosons at the 13 TeV and 100 TeV proton-proton colliders. Specifically, we focus on three DPS channels: $W$-boson plus two jets ($W\otimes jj$), $Z$-boson plus two jets ($Z\otimes jj$), and same-sign $W$ pair production ($W^\pm\otimes W^\pm$). We demonstrate that the $Z\otimes jj$ process, which has not been paid too much attentions, is the best channel for measuring effective cross section $\sigma_{\rm eff}$. The accuracy of $\sigma_{\rm eff}$ measurement in the three DPS channels, especially the $W^\pm\otimes W^\pm$ production, is significantly improved at the 100 TeV colliders. We advocate that combined analysis of the three DPS channels could test the universality of effective cross section $\sigma_{\rm eff}$.