The three-dimensional distribution of quarks in momentum space

Abstract

We present the distribution of unpolarized quarks in a transversely polarized proton in three-dimensional momentum space. Our results are based on consistent extractions of the unpolarized and Sivers transverse momentum dependent parton distributions (TMDs).

Several changes compared to first version. Additional equations inserted, additional explanations, inclusion of normalization errors, inclusion of Z and W data points and corresponding plots. Results remained qualitatively similar to first version

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• Probing gluon TMDs with reconstructed and tagged heavy flavor hadron pairs at EIC
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• Measurement of transverse single-spin asymmetries for dijet production in polarized proton-proton collisions at $\sqrt{\mathbf{s}}$ = 200 $\mathrm{GeV}$
• Deep Neural Network extraction of Unpolarized Transverse Momentum Distributions