RT Journal Article
T1 PDF bias and flavor dependence in TMD distributions
A1 Bury, Marcin
A1 Hautmann, Francesco
A1 Leal Gomez, Sergio
A1 Scimemi, Ignazio
A1 Vladimirov, Aleksey
A1 Zurita, Pia
AB Transverse momentum dependent (TMD) distributions match collinear parton density functions (PDF) in the limit of small transverse distances, which is accounted for by global extractions of TMD distributions. We study the influence of the collinear PDF value and uncertainties on the determination of unpolarized TMD distributions and the description of Drell-Yan (DY) and Z-boson production measurements at low transverse momenta. We take into account, for the first time in fits including TMD evolution, flavordependent non-perturbative TMD profiles. We carry out a Bayesian analysis to incorporate the propagation of PDF uncertainties into TMD extractions. We find that collinear PDF uncertainties and non-perturbative TMD flavor dependence are both essential to obtain reliable TMD determinations, and should be included in future global analyses.
PB Springer
SN 1029-8479
YR 2022
FD 2022-10-18
LK https://hdl.handle.net/20.500.14352/72634
UL https://hdl.handle.net/20.500.14352/72634
LA eng
NO © 2022 The Authors.This study was supported by Deutsche Forschungsgemeinschaft (DFG) through the research Unit FOR 2926, "Next Generation pQCD for Hadron Structure: Preparing for the EIC", project number 430915485. I.S. is supported by the Spanish Ministry grant PID2019106080GB-C21. This project has received funding from the European Union Horizon 2020 research and innovation program under grant agreement Num. 824093 (STRONG-2020). S.L.G. is supported by the Austrian Science Fund FWF under the Doctoral Program W1252-N27 Particles and Interactions.
NO Unión Europea. Horizonte 2020
NO Ministerio de Ciencia e Innovación (MICINN)
NO German Research Foundation (DFG)
NO Austrian Science Fund (FWF)
DS Docta Complutense
RD 11 may 2025