Online HF Seminar Series - 2025

1 Oct 2025, 08:00 → 31 Dec 2025, 20:00 US/Eastern

The online seminar series on “Heavy Flavor Probes of QCD Matter” covers various aspects of hot and cold QCD with a focus on heavy flavor probes.  This online seminar series is scheduled on every other Wednesday at  9:00am US Eastern Time. 

The seminar series is initiated by HEFTY Collaboration, a DOE funded theoretical collaboration in nuclear physics.

Organizers:  Xin Dong ([email protected]), Peter Petreczky ([email protected]), Ralf Rapp ([email protected]), Ramona Vogt ([email protected])

Wednesday 8 October

09:00 → 10:00 HEavy-Flavor TheorY for QCD Matter

The HEFTY collaboration has been created to describe, in a comprehensive way, the production, transport and hadronization of heavy-flavor particles in heavy-ion collisions, by bringing together state-of-the-art expertise on the various components needed to achieve that. In this talk we give a brief overview of the goals of this theory collaboration and present selected highlights of the activities thus far. We start from the implementation of recent constraints from lattice QCD into quantum many-body theory to evaluate quarkonium spectral functions, a determination of their poles through an analysis in the complex energy plane, as well as results for the closely related heavy-quark and -quarkonium transport coefficients in the strongly coupled QGP. We also discuss implementations into transport models for heavy-ion collisions, with first comparisons to experimental data from the LHC.

Zoom Recording: https://drive.google.com/file/d/1dbyD9lUihrJmX_cugHSAhnF6HjHE0R_6/view?usp=drive_link

Contact: [email protected]

Speaker: Ralf Rapp (Texas A&M University)

Wednesday 29 October

09:00 → 10:00 Heavy Quark Diffusion Coefficient from Lattice QCD

I will present HotQCD's new lattice results for the heavy quark diffusion coefficient in 2+1 flavor QCD. These results are from the temperature range of 163 MeV to 10 GeV and have a near-physical pion mass. Our results for the spatial heavy diffusion coefficient near the crossover temperature are considerably smaller than the results driven by experimental data, but close to the AdS/CFT estimate computed at strong coupling. At high temperatures, however, the spatial heavy diffusion coefficient increases and approaches the NLO weak coupling prediction within the estimated errors.

Speaker: Jorge Dasilva (Brookhaven National Laboratory)

Wednesday 12 November

09:00 → 10:00 Heavy Flavors: from RHIC to EIC

Characterizing and understanding the properties of the quark-gluon plasma formed in heavy-ion collisions is a central goal of high-energy nuclear physics, and quarkonium production in these collisions has played a vital role in this effort. Thanks to significant experimental and theoretical developments in the last several decades, it has been realized that many mechanisms, including dissociation, regeneration, cold nuclear matter effects, feed-down structure, can affect observed quarkonium production in heavy-ion collisions. Therefore, multi-differential measurements are needed to disentangle these effects. In this talk, I will review a wealth of quarkonium measurements at RHIC since its inauguration, discuss their physics implications and provide an outlook to the future.

Speaker: Rongrong Ma (BNL)

Wednesday 26 November

09:00 → 10:00 TBD

Wednesday 10 December

09:00 → 10:00 Overview of Experimental Results on Heavy Flavor Probes from LHC

Speaker: Yen-Jie Lee (MIT)