Flavor dependent b-profiles from Drell-Yan spectra at low transverse momenta
December 14, 2022
We discuss our recent study of the impact of collinear PDFs and their
uncertainties on the determination of transverse momentum dependent (TMD)
distributions and the description of Drell-Yan (DY) production measurements
at low transverse momenta. Using QCD factorization and evolution in transverse
coordinate $b$ space, this study takes into account for the first time
flavor-dependent non-perturbative $b$-profiles. It illustrates
that collinear PDF uncertainties and non-perturbative TMD flavor dependence
are both essential to obtain reliable TMD determinations.
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