Quark Matter 2025

Session

Parallel session 18

8 Apr 2025, 10:50

Goethe University Frankfurt, Campus Westend, Theodor-W.-Adorno-Platz 1, 60629 Frankfurt am Main, Germany

Conveners

Parallel session 18: Jets III

• John William Harris (Yale University (US))

921. Studies of jet quenching in O+O collisions at $\sqrt{s_{NN}}$ = 200 GeV by STAR

Sijie Zhang

08/04/2025, 10:50

Jets

Oral

Jet quenching — modifications to the energy and substructure of high-energy parton showers in the Quark Gluon Plasma (QGP) — serves as a key experimental tool to probe properties of QGP in relativistic heavy-ion collisions. On one hand, the quenching effect, often quantified through the nuclear modification factor (e.g., $R_{AA}$), is well established in large collision systems, such as Au+Au...

801. Measurements of Baryon-to-Meson Ratios Inside Jets in Au+Au and $p$+$p$ Collisions at $\sqrt{s_{NN}} = 200$ GeV at STAR

Gabe Dale-Gau (University of Illinois at Chicago)

08/04/2025, 11:10

Jets

Oral

Measurements at RHIC and the LHC show strongly enhanced baryon-to-meson yield ratios at intermediate transverse momenta ($p_{\rm{T}}$) in inclusive measurements from high-energy nuclear collisions compared to $p$+$p$ baseline. This enhancement is attributed to strong hydrodynamic flow and parton recombination in the Quark-Gluon Plasma (QGP).
Jet probes have been used extensively to gain...

683. Probing jet hadrochemistry modification with measurements of π, K, and p in jets and the underlying event in pp and Pb–Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV with ALICE

Sierra Cantway (Yale University (US))

08/04/2025, 11:30

Jets

Oral

Measurements of jet substructure observables in heavy-ion collisions provide powerful constraints on the microscopic mechanisms of interactions between energetic partons and the QGP. Though there has been remarkable progress in measuring inclusive charged-particle jet substructure observables, a complete understanding of the identified particle production inside jets (jet hadrochemistry) and...

541. Modification of the Jet Energy-Energy Correlator in Cold Nuclear Matter

Dr Chathuranga Sirimanna (Duke University), Yu Fu (Duke university)

08/04/2025, 11:50

Jets

Oral

We compute medium corrections to the energy-energy correlator (EEC) for jets in electron-nucleus collisions at leading order in the QCD coupling and the interaction of the jet with the medium. We derive an analytical expression for the modification of the EEC as a function of the opening angle and show that the modification is strongest at large angles within the jet cone. We obtain explicit...

408. Comprehensive study of jet substructure using a multi-stage jet evolution framework

Chathuranga Sirimanna

08/04/2025, 12:10

Jets

Oral

We present a comprehensive study of jet substructure modifications in heavy-ion collisions using the JETSCAPE framework. Our approach utilizes the multi-stage jet energy loss description, which includes suppression of jet-medium interaction at high virtuality, reflecting the virtuality dependence of the process. The parameters used in our simulations are tuned to reproduce hadron RAA and...