TL;DR
This paper discusses the development of the NNPDFpol2.0 polarized parton distribution functions, emphasizing the importance of heavy quark effects and presenting preliminary results for improved polarized gluon distribution modeling.
Contribution
It introduces the first application of the FONLL scheme in polarized DIS and provides preliminary NNPDFpol2.0 results using the NNPDF4.0 framework.
Findings
Heavy quark effects significantly impact polarized gluon distributions.
Charm mass corrections are crucial for accurate polarized PDFs.
Preliminary NNPDFpol2.0 results show promising improvements.
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 interpretation 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.
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Taxonomy
TopicsMedical Imaging Techniques and Applications