Possible indication to the QCD evolution of double parton distributions?

TL;DR

This paper reports the first measurements of the process-independent parameter of double parton scattering at three different scales, suggesting potential QCD evolution effects in double parton distributions.

Contribution

It introduces new experimental measurements of $\sigma_{ m eff}^{ m exp}$ at multiple scales, providing insights into the QCD evolution of double parton distributions.

Findings

Measurement of $\sigma_{ m eff}^{ m exp}$ at three scales

Indication of decreasing effective cross section with increasing scale

Potential evidence for QCD evolution in double parton distributions

Abstract

For the first time the process-independent parameter of double parton scattering, $\sigma_{\rm eff}^{\rm exp}$, has been measured newly in the D0 experiment at the three different resolution scales.If we interpret the measurement as a decrease of the effective cross section with a growth of the resolution scale it can indicate the QCD evolution of double parton distributions.