We study double parton scattering (DPS) processes involving electroweak gauge bosons at the 13 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 received much attention, is the best channel for measuring the effective cross section ${\sigma }_{\mathrm{eff}}$. The accuracy of the ${\sigma }_{\mathrm{eff}}$ 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 the effective cross section ${\sigma }_{\mathrm{eff}}$.

• Received 7 November 2017

DOI:https://doi.org/10.1103/PhysRevD.97.035013

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Published by the American Physical Society