Volume 469 - 31st International Workshop on Deep Inelastic Scattering (DIS2024) - WG5: Spin and 3D Structure
Towards NNPDFpol2.0
F. Hekhorn
Full text: pdf
Pre-published on: December 27, 2024
Published on: January 16, 2025
Abstract
We review the recent efforts in the NNPDF Collaboration towards a new global extraction of
polarized parton distributions functions (pPDF). Polarized PDFs are highly relevant for the in-
terpretation of current and future polarized high-energy experiments, including the upcoming
Electron-Ion Collider (EIC). We present a recent study of the role played by heavy quark effects in
polarized DIS, where we apply the FONLL general-mass variable-flavour-number scheme for the
first time in a polarized setup and demonstrate the significant impact of charm mass corrections,
specifically for the polarized gluon distribution. We show preliminary results (DIS-only) of this
new pPDF release, NNPDFpol2.0, based on the NNPDF4.0 fitting machinery and the associated
new theory prediction pipeline.
DOI: https://doi.org/10.22323/1.469.0204
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