Speaker
Description
Drell-Yan production data have been used to extract transverse momentum dependent parton distribution functions (TMDPDFs). The evolution of these non-perturbative objects is conveniently described in $b_T$ space, which is the Fourier conjugate to transverse momentum. Both perturbative QCD calculations and non-perturbative TMD functions comprise the Drell-Yan cross section at low and high regions of the $b_T$ spectrum, respectively. The perturbative QCD description includes the operator product expansion, which has dependence on collinear PDFs. We particularly focus on the $\pi A$ Drell-Yan experimental data and the effects on pion parton distributions. We also show progress in the nucleon sector with high-energy Drell-Yan and $Z$-boson production data.
