Bulletin of the American Physical Society
APS April Meeting 2020
Volume 65, Number 2
Saturday–Tuesday, April 18–21, 2020; Washington D.C.
Session G07: The Hadronic Spectrum in Hot and Cold QCDInvited Live
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Sponsoring Units: GHP DNP Chair: Anne Sickles, University of Illinois at Urbana-Champaign Room: Roosevelt 2 |
Sunday, April 19, 2020 8:30AM - 9:06AM Live |
G07.00001: The Hadronic Resonance Spectrum and QCD at Finite Temperature and Density Invited Speaker: Claudia Ratti The knowledge of the hadronic spectrum is still an open problem, which has phenomenological consequences in the study of heavy-ion collisions. In a study based on lattice QCD thermodynamics, we concluded that additional strange resonances are missing in the currently tabulated lists provided by the Particle Data Group (PDG). That study identified the ideal spectrum to be used as an input in thermal-model-based analyses. We then studied the effect of additional resonances on the freeze-out parameters of systems created in heavy-ion collisions. These parameters are obtained from a thermal fit of particle yields and net-particle fluctuations. In this talk I will review our results on the effect of the chosen hadronic resonance spectrum on several QCD observables at finite temperature and density. [Preview Abstract] |
Sunday, April 19, 2020 9:06AM - 9:42AM Live |
G07.00002: The Hadronic Resonance Spectrum at Zero Temperature Invited Speaker: Jozef Dudek I will discuss the spectrum of excited hadrons in QCD, and in particular how recent developments in lattice QCD are allowing us to determine these states theoretically in the same way they manifest in experiments -- as unstable resonances. [Preview Abstract] |
Sunday, April 19, 2020 9:42AM - 10:18AM Live |
G07.00003: Resonance formation in heavy ion collisions Invited Speaker: Anders Knospe Hadronic resonances are unique and valuable probes of the matter produced in high-energy ion-ion collisions. Measurements of resonance yields shed light on the hadrochemistry of the system, including its evolution with system size, as well as the properties of the later hadronic phase. Studies of resonances such as the $\phi(1020)$ meson also improve our understanding of the various mechanisms, including flow and recombination, that determine the momentum and azimuthal distributions of hadrons. Searches for modifications of resonance properties in large collision systems help us understand the properties of the partonic medium. To explore these topics, an overview of resonance measurements will be presented and compared to results from theoretical models. [Preview Abstract] |
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