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Spectator-model studies for spin-dependent gluon TMD PDFs at the LHC and EIC

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arxiv 2310.19916 v1 pith:44LJMZXI submitted 2023-10-30 hep-ph

classification hep-ph
keywords gluonanalysesspectator-modelspin-dependenttime-reversalaccessingaccurateapproach
verification ladder T0 review T1 audit T2 compute T3 formal

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We present novel analyses on accessing the 3D gluon content of the proton via spin-dependent TMD gluon densities, calculated through the spectator-model approach. Our formalism embodies a fit-based spectator-mass modulation function, suited to catch longitudinal-momentum effects in a wide kinematic range. Particular attention is paid to the time-reversal even Boer--Mulders and the time-reversal odd Sivers functions, whose accurate knowledge, needed to perform precise 3D analyses of nucleons, motivates synergies between LHC and EIC Communities.

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Cited by 1 Pith paper

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  1. The impact of the TMD shape function on matching the transverse momentum spectrum in $J/\psi$ production at the EIC

    hep-ph 2025-04 conditional novelty 6.0 of 10

    A process-dependent soft-gluon term in the J/psi TMD shape function is needed to keep the matched cross-section and cos(2phi) asymmetry predictions physical at the EIC, which supports the analytic result of Boer et al...

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