%0 Journal Article
%A Echevarria, Miguel G.
%A Makris, Yiannis
%A Scimemi, Ignazio
%T Quarkonium TMD fragmentation functions in NRQCD.
%D 2020
%@ 1029-8479
%U https://hdl.handle.net/20.500.14352/7614
%X We study the transverse-momentum spectrum of quarkonium production from single light-parton fragmentation mechanism. In the case of semi-inclusive deep inelastic scattering, we observe that there are two possible initiating processes, namely photongluon fusion and light-quark fragmentation. For the second case we derive the factorization theorem, which involves a new hadronic quantity: the quarkonium transverse-momentumdependent fragmentation functions in NRQCD. We calculate their matching onto the non-perturbative long distance matrix elements at the lowest order in the strong-coupling constant, O(alpha(2)(s)). Focusing on the case of the electron-ion collider, we make a comparative phenomenological study of the two production mechanisms and find the regions of the phase space where one is dominant over the other.
%~