XXVIII International Workshop on Deep-Inelastic Scattering and Related Subjects

Perturbative uncertainties in the Drell-Yan spectrum at low qT

15 Apr 2021, 10:36

18m

Virtual (Stony Brook, NY)

Contributed Talk Structure Functions and Parton Densities Structure function and parton densities

Speaker

Dr Giuseppe Bozzi (University of Pavia)

Description

We perform a quantitative study of different methods used to solve evolution equations in QCD (${\alpha }_s$, PDFs, TMDs).
We highlight differences and similarities between numerical and analytical solutions, focusing on the $q_T$ spectrum of Drell-Yan pair production analysed in the context of TMD/SCET-factorisation vs. qT-resummation formalism.
The final aim is to provide a reliable theoretical-uncertainty estimate that will eventually allow for a faithful determination of non-perturbative effects from fits to data.

Presentation materials

Bozzi.pdf

Youtube Link