Speaker
Lorenzo Rossi
(Istituto Nazionale di Fisica Nucleare)
Description
In this talk, we present a detailed study of low-invariant-mass Drell–Yan data over the full transverse-momentum spectrum. Our predictions consistently combine small-$q_T$ resummation up to N$^4$LL accuracy with fixed-order calculations at NNLO. In the very low-$q_T$ region, non-perturbative effects become relevant and are modeled through a minimal non-perturbative form factor. The parameters of this model are fitted to experimental data and are directly related to the non-perturbative behavior of transverse-momentum–dependent parton distributions (TMDs) and of the Collins–Soper kernel.
| Speaker confirmation | Yes |
|---|
Authors
Giancarlo Ferrera
(Istituto Nazionale di Fisica Nucleare)
Lorenzo Rossi
(Istituto Nazionale di Fisica Nucleare)
Stefano Camarda
(CERN)