54th International Symposium on Multiparticle Dynamics (ISMD 2026)

Session

Session 2

Heavy Flavor and Jets in Nuclear Collisions

17 Aug 2026, 11:40

Conveners

Session 2

• Christopher Mc Ginn (Massachusetts Inst. of Technology (US))

39. Boosted boson jet quenching

Dr Yang-Ting Chien (Georgia State University)

17/08/2026, 11:40

1. Hot and Dense QCD Matter

Oral presentation

I will discuss the use of hadronic decaying, boosted bosons as direct probes of color decoherence effects in heavy ion collisions. The angle between the two subjets is inversely proportional to the boson jet transverse momenta, which allows us to identify the medium resolution angle from the coherence to decoherence transition. Also, the modifications of height, width and the position of the...

33. QCD Radiation and the Dead-Cone Effect Across Heavy-Quark Jets

Redamy PEREZ RAMOS

17/08/2026, 12:05

3. Hadron Spectroscopy, Exotic States, and Heavy Quark Physics

Oral presentation

We present a unified overview of recent progress in the study of QCD radiation in heavy-quark jets, focusing on the dead-cone effect. Using precision data from LEP at \sqrt{s}=91.2~GeV, we demonstrate strong momentum-space suppression in charm and bottom quark jets, supported by Monte Carlo simulations with Pythia8, and provide a quantitative interpretation within the Modified Leading...

10. Charmed meson production by recombination in relativistic heavy ion collisions

Sungtae Cho

17/08/2026, 12:30

1. Hot and Dense QCD Matter

Oral presentation

We discuss the production of charmed mesons in heavy-ion collisions, by focusing on their yields and transverse momentum distributions when they are produced from the quark-gluon plasma by quark recombination. We consider the production of not only the $D$, $D^*$, $D_s$, and $D_s^*$ meson, but also the $D_{s0}^*(2317)$, $D_{s1}(2460)$, $D_{s1}(2536)$, and $D_{s2}^*(2573)$ meson, thereby...

32. Multiplicity-Dependent Charmonium Production in Small Collision Systems with PHENIX

Sanghoon Lim (Yonsei University)

17/08/2026, 12:55

3. Hadron Spectroscopy, Exotic States, and Heavy Quark Physics

Oral presentation

We present PHENIX measurements of multiplicity-dependent charmonium production in small collision systems at RHIC, including p+p and p+Au collisions at sqrt(s_NN) = 200 GeV. Recent measurements at RHIC and the LHC have shown an enhancement of self-normalized J/psi yields with increasing charged-particle multiplicity, suggesting possible contributions from multi-parton interactions, long-range...

64. Measurement of Charged Hadron Multiplicity in Oxygen-Oxygen and Proton-Proton Collisions at $\sqrt{s_{\text{NN}}}=200~\mathrm{GeV}$ with the sPHENIX detector (flash talk)

Dr Cheng-Wei Shih (National Central University)

17/08/2026, 13:20

1. Hot and Dense QCD Matter

Poster presentation

sPHENIX is a next-generation collider detector at RHIC, featuring large-acceptance, electromagnetic and hadronic calorimeter systems as well as a suite of precision tracking detectors. sPHENIX was successfully commissioned and completed its high-quality physics data-taking program with p+p, O+O, and Au+Au collisions in 2026. In addition to the high-$p_{T}$ physics program, the detector has...