Non-perturbative contributions to transverse momentum spectra in hadronic collisions

25 Mar 2020, 09:00
20m
Brooklyn, NY

Brooklyn, NY

333 Adams Street, Brooklyn, New York 11201, USA
Contributed Talk Electroweak Physics and Beyond the Standard Model Electroweak Physics and Beyond the Standard Model

Speaker

Dr Francesco Hautmann

Description

Experimental measurements of Drell-Yan (DY) vector-boson production
are available from the Large Hadron Collider (LHC) and from lower-energy collider and fixed-target experiments. In the low transverse momentum end of DY spectra, important for the extraction of the $W$-boson mass at the LHC, QCD contributions from non-perturbative Sudakov form factors and intrinsic transverse momentum become relevant. We study the potential for determining such contributions from fits to LHC and lower-energy experimental data, using the framework of low-$q_T$ factorization for differential DY cross sections in terms of transverse momentum dependent (TMD) distribution functions. We investigate correlations between different sources of TMD non-perturbative effects, and correlations with collinear parton distributions. We stress the relevance of accurate low-mass DY measurements with fine binning in transverse momentum for improved determinations of long-distance contributions to Sudakov evolution processes and TMDs.

Primary author

Presentation materials

There are no materials yet.