The factorization theorem for qT spectra in Drell-Yan processes, boson production and semi-inclusive deep inelastic scattering allows for the determination of the non-perturbative parts of transverse momentum dependent parton distribution functions. Here we discuss the fit of Drell-Yan and Z-production data using the transverse momentum dependent formalism and the resummation of the evolution kernel. We find a good theoretical stability of the results and a final χ2/points≲1. We show how the fixing of the non-perturbative pieces of the evolution can be used to make predictions at present and future colliders.
@article{arxiv.1410.4522,
title = {TMDs: Evolution, modeling, precision},
author = {Umberto D'Alesio and Miguel G. Echevarría and Stefano Melis and Ignazio Scimemi},
journal= {arXiv preprint arXiv:1410.4522},
year = {2015}
}
Comments
6 pages, 3 pdf figures, uses webofc.cls. Invited talk delivered by I. Scimemi at the Fourth International Workshop on "Transverse Polarisation Phenomena in Hard Processes" (Transversity 2014), Chia, Cagliari, Italy, June 9-13, 2014. To appear in EPJ Web of Conferences