Papers › Polarized TMD fragmentation functions for J/ψ production
Polarized TMD fragmentation functions for J/ψ production
Marston Copeland, Sean Fleming, Rohit Gupta, Reed Hodges, Thomas Mehen
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We calculate the matching, at leading order, of the transverse momentum-dependent fragmentation functions (TMDFFs) for light quarks and gluons fragmenting to a J/ψ onto polarized nonrelativistic QCD (NRQCD) TMDFFs. The NRQCD TMDFFs have an operator-product-expansion in terms of nonperturbative NRQCD production matrix elements. Using the results we obtain, we make predictions for the light quark fragmentation contribution to the production of polarized J/ψ in semi-inclusive deep inelastic scattering (SIDIS) both for unpolarized and longitudinally polarized beams. These results are an important contribution to polarized J/ψ production in SIDIS, and thus are needed for comparison with experiments at the future Electron-Ion Collider.
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