Probing gluon TMD models with Drell-Yan structure functions

by Jan Ferdyan (Jagiellonian University)

Tuesday 21 Jul 2026, 11:00 → 12:00 US/Eastern

We study the Drell-Yan structure functions within the kT-factorization framework, with particular emphasis on the Lam-Tung combination, which is known to be sensitive to the transverse momentum of the initial-state partons. We consider the two dominant tree-level scattering channels involving gluons: the scattering of two off-shell gluons and the scattering of a valence quark with an off-shell gluon. Within this approach, we probe various gluon transverse momentum distribution (TMD) models and compare theoretical predictions with ATLAS measurements. We find that the Drell-Yan structure functions are sensitive to the choice of gluon TMD model, and in particular, that a reasonably good description of the Lam-Tung combination can be achieved within this formalism for some of the considered TMD models.