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Impact of Inclusive Electron Ion Collider Data on Collinear Parton Distributions
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abstract
A study is presented of the impact of simulated inclusive Electron Ion Collider Deep Inelastic Scattering data on the determination of the proton and nuclear parton distribution functions (PDFs) at next-to-next-to-leading and next-to-leading order in QCD, respectively. The influence on the proton PDFs is evaluated relative to the HERAPDF2.0 set, which uses inclusive HERA data only, and also relative to the global fitting approach of the MSHT20 PDFs. The impact on nuclear PDFs is assessed relative to the EPPS21 global fit and is presented in terms of nuclear modification ratios. For all cases studied, significant improvements in the PDF uncertainties are observed for several parton species. The most striking impact occurs for the nuclear PDFs in general and for the region of high Bjorken $x$ in the proton PDFs, particularly for the valence quark distributions.
Forward citations
Cited by 2 Pith papers
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Toward Precision Helicity PDFs from Global DIS and SIDIS Fits with Projected EIC Measurements
Projected EIC pion and kaon SIDIS measurements would substantially reduce the uncertainties on the proton's sea-quark and gluon helicity distributions, most strongly at small momentum fractions.
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Revisiting constraints on proton PDFs from HERA DIS, Drell-Yan, W/Z Boson production, and projected EIC measurements
A new NLO and NNLO global QCD fit to HERA, Drell-Yan, and W/Z data yields proton PDFs, a strange-sea ratio near 1.07, and projections that EIC data would reduce gluon and alpha_s uncertainties.
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