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- W4387323726 abstract "We investigate the feasibility of exploring the gluon transverse-momentum-dependent distribution functions (TMDs) inside a longitudinally polarized nucleon. We utilize quarkonium production via the color-octet mechanism combined with TMD formalism in semi-inclusive deeply inelastic scattering (SIDIS) at low transverse momentum as a tool to access polarized gluon TMDs. The corresponding cross-section of the process is expressed in terms of gluon TMDs and non-relativistic QCD matrix elements. We provide the expressions for the $sin2phi$ azimuthal asymmetries of $J/psi$ production in SIDIS with a unpolarized beam colliding on longitudinally polarized nucleon. The asymmetry is contributed by the time-reversal-odd gluon TMD $h_{1L}^{perp ,g}(x,boldsymbol{p}_T^2)$. The maximum possible asymmetry deduced from the positivity bound is sizable and could be measured. We also estimate the double longitudinal spin asymmetry $A_{LL}$ of $J/psi$ production using a spectator model result for $g_{1L}^g(x,boldsymbol{p}_T^2)$." @default.
- W4387323726 created "2023-10-04" @default.
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- W4387323726 date "2023-10-01" @default.
- W4387323726 modified "2023-10-05" @default.
- W4387323726 title "Gluon TMDs from J/$psi$ production in longitudinally polarized deeply inelastic scattering" @default.
- W4387323726 doi "https://doi.org/10.48550/arxiv.2310.00609" @default.
- W4387323726 hasPublicationYear "2023" @default.
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