Workshop: Next Generation of Jet Studies in Heavy-Ion Collisions II

Measurements at RHIC and the LHC show a significant enhancement in baryon-to-meson yield ratios at intermediate transverse momenta in high-energy nuclear collisions compared to baseline e⁺e^- collisions. This enhancement is attributed to the following QGP effects: strong hydrodynamic flow and parton recombination. Jet probes have played a crucial role in exploring QGP properties, with observations showing notable alterations in jet yields and internal structures across various experiments. Despite apparent medium-induced changes to jet fragmentation patterns, the LHC results indicate that in-jet baryon-to-meson ratios in high energy nuclear collisions remain similar to those of p+p and e⁺e^- collisions. This talk explores novel experimental techniques for identifying in-jet hadrochemistry in heavy ion collisions at the LHC and RHIC, through the combination of jet-hadron correlation techniques and particle identification (PID). The application of these techniques to recently collected high-luminosity data enables the search for possible recombination between jet fragments and thermal partons, providing insight into the interplay between hadronization mechanisms in jets and the QGP.

Funding acknowledgement

U.S. Department of Energy