Speaker
Prof.
Laurent Favart
(Universite Libre de Bruxelles (BE))
Description
The parton branching (PB) method allows using TMD evolution with standard Monte Carlo event generators, replacing the current approximate treatment of initial state radiation with a rigorous prediction from first principles. A key parameter of PB is the intrinsic kT, which governs the low-scale behaviour of the TMD. In its first extraction from collider Drell-Yan data, tensions appeared between experiments. We discuss their origin and consequences on the extraction of TMD parameters from high-energy collider data. In particular, we demonstrate that these determinations are strongly affected by correlated uncertainties across transverse-momentum bins in the region of low transverse momenta.
Authors
Dr
Aleksandra Lelek
(Universiteit Antwerpen)
Prof.
Francesco Hautmann
(University of Oxford)
Prof.
Laurent Favart
(Universite Libre de Bruxelles (BE))
Dr
Louis Moureaux
(Universität Hamburg)