HEavy-Flavor TheorY for QCD Matter

• Ralf Rapp (Texas A&M University)

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][1] Contact: [email protected] [1]: https://drive.google.com/file/d/1dbyD9lUihrJmX_cugHSAhnF6HjHE0R_6/view?usp=drive_link

Heavy Quark Diffusion Coefficient from Lattice QCD

• Jorge Dasilva (Brookhaven National Laboratory)

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. Zoom Recording: [https://drive.google.com/file/d/1RSrtkzaccMm3A8FYTCrlSgDc6-vqCldY/view?usp=drive_link][1] Contact: [email protected] [1]: https://drive.google.com/file/d/1RSrtkzaccMm3A8FYTCrlSgDc6-vqCldY/view?usp=drive_link

Probe the Quark Gluon Plasma with Quarkonia at RHIC

• Rongrong Ma (BNL)

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. Zoom Recording: [https://drive.google.com/file/d/1dDStjkdDIRCDzEzjuAazB6QTP5JUkWdY/view?usp=drive_link][1] Contact: [email protected] [1]: https://drive.google.com/file/d/1dDStjkdDIRCDzEzjuAazB6QTP5JUkWdY/view?usp=drive_link

No Seminar

Overview of Experimental Results on Heavy Flavor Probes from LHC

• Yen-Jie Lee (MIT)

Heavy quarks, produced early in high-energy nuclear collisions, serve as calibrated probes of the quark-gluon plasma (QGP). This talk reviews recent experimental results from LHC experiments on open heavy flavor and quarkonia in pp, pA, and AA collisions. I will discuss nuclear modification and flow of charm and beauty hadrons; heavy-flavor jets and their substructure; and quarkonium suppression and (re)generation across energies and centralities. Emphasis will be placed on what are the lessons learned from these measurements. The talk will close with prospects for Run 3 and 4 and how forthcoming precision and new observables can sharpen our understanding of QGP properties. Zoom Recording: [https://drive.google.com/file/d/1hGWQfuxbIn0AuajbLHxHa6G_VnBq7WMM/view?usp=drive_link][1] Contact: [email protected] [1]: https://drive.google.com/file/d/1hGWQfuxbIn0AuajbLHxHa6G_VnBq7WMM/view?usp=drive_link