Energy-scaling behavior of intrinsic transverse momentum parameters in Drell-Yan simulation

TL;DR

This paper investigates how the intrinsic transverse momentum parameters in Drell-Yan processes scale with energy, revealing an energy-dependent behavior consistent across different invariant masses.

Contribution

It provides a comprehensive analysis of the energy-scaling behavior of intrinsic transverse momentum parameters using data from various experiments and event generator tuning.

Findings

Intrinsic $k_T$ parameters scale with energy independently of invariant mass.

Energy-scaling behavior observed across three orders of magnitude in energy.

Results support a universal energy dependence model for intrinsic transverse momentum.

Abstract

An analysis is presented based on models of the intrinsic transverse momentum (intrinsic $k_\mathrm{T}$) of partons in nucleons by studying the dilepton transverse momentum in Drell-Yan events. Using parameter tuning in event generators and existing data from fixed-target experiments and from hadron colliders, our investigation spans three orders of magnitude in center-of-mass energy and two orders of magnitude in dilepton invariant mass. The results show an energy-scaling behavior of the intrinsic $k_\mathrm{T}$ parameters, independent of the dilepton invariant mass at a given center-of-mass energy.