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New constraints on the up-quark valence distribution in the proton

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arxiv 2209.06571 v3 pith:Y7LBFIKI submitted 2022-09-14 hep-ph hep-ex

New constraints on the up-quark valence distribution in the proton

Ritu Aggarwal , Michiel Botje , Allen Caldwell , Francesca Capel , Oliver Schulz This is my paper
classification hep-ph hep-ex
keywords up-quarkdatadensitydistributionpartonprotonresultsvalence
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The high-$x$ data from the ZEUS Collaboration are used to extract parton density distributions of the proton deep in the perturbative regime of QCD. The data primarily constrain the up-quark valence distribution and new results are presented on its $x$-dependence as well as on the momentum carried by the up-quark. The results were obtained using Bayesian analysis methods which can serve as a model for future parton density extractions.

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