Speaker
Description
Heavy-quarkonium production in jets provides a powerful probe of the interplay between heavy-quark production, parton showering, fragmentation, and hadronization in QCD. Compared with inclusive $J/\psi$ measurements, $J/\psi$-in-jet observables retain information on the surrounding jet structure and are therefore sensitive to how the quarkonium momentum is shared with other final-state particles. The fragmentation variable $z = p_{\mathrm{T}}^{J/\psi}/p_{\mathrm{T}}^{\mathrm{jet}}$ is particularly useful for testing quarkonium production mechanisms and for validating Monte Carlo descriptions of heavy-flavor dynamics in hadronic collisions.
In this work, we will present a PYTHIA 8 study of prompt and non-prompt $J/\psi$ production inside jets in proton-proton collisions, focusing on the $z$ distribution and jet constituent multiplicity. We will compare the simulations with available CMS and ALICE measurements and discuss the roles of multiple parton interactions and color reconnection in shaping the observed $J/\psi$-in-jet fragmentation behavior.
| 请选择分会 | 强子物理与味物理 |
|---|
