Electroweak boson production in double parton scattering

TL;DR

This paper investigates the production of electroweak boson pairs in double parton scattering, emphasizing the significance of splitting terms in the QCD evolution equations and their impact on cross section calculations.

Contribution

It introduces the analysis of splitting terms in QCD evolution equations for double parton distributions, highlighting their importance in electroweak boson production.

Findings

Splitting terms significantly affect double parton scattering cross sections.

Splitting contributions are not suppressed at large relative momenta.

The study provides detailed discussion on the role of these terms in the process.

Abstract

We study the $W^+W^-$ and $Z^0Z^0$ electroweak boson production in double parton scattering using QCD evolution equations for double parton distributions. In particular, we analyze the impact of splitting terms in the evolution equations on the double parton scattering cross sections. Unlike the standard terms, the splitting terms are not suppressed for large values of the relative momentum of two partons in the double parton scattering. Thus, they play an important role which we discuss in detail for the single splitting contribution to the cross sections under the study.