Speaker
Description
We investigate the inclusive hadroproduction of the pseudoscalar heavy-quarkonium mesons at moderate-to-large transverse momenta. Our theoretical framework is based on the Non-Relativistic QCD (NRQCD) and it assumes the single-parton collinear fragmentation mechanism within a variable-flavor number scheme. NRQCD indeed describes the formation of the heavy quark bound state at the initial scale at NLO. To release NRFF1.0, the first public fragmentation function sets for heavy-quarkonium spcies, we make use of the Heavy-Flavor NonRelativistic evolution (HF-NRevo) scheme, that consistently combines NRQCD initial-scale input with DGLAP evolution threshold for all partonic channels. This setup suits well for theoretical developments such as the study of vector states through $J/\psi$ and $\Upsilon$ and the extension of HF-NRevo to quarkonium-in-jet fragmentation, enabling the study of jet substructure via quarkonium-modulated angularities and resummation-sensitive observables.
Phenomenologically, this framework has many applications, including the study of exotic states, the exploration of intrinsic charm, and the investigation of heavy-flavor fragmentation function modulations in hot Quark-Gluon Plasma. Moreover, it can be used to match single-parton Transverse Momentum Dependent fragmentation functions (TMD FFs) to their collinear counterparts via NRFF1.0.