Additional strange resonances in Lattice QCD

15th International Conference on Strangeness in Quark Matter

Marczenko, Michal^1

Institute of Theoretical Physics, University of Wroclaw, pl. Maksa Borna 9, Wroclaw

PL-50204, Poland^1

关键词: Charge fluctuations;    Hadron resonance gas;    Lattice QCD;    Mass regions;    Mass spectra;    Medium composition;    Particle data groups;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/668/1/012069/pdf
DOI  :  10.1088/1742-6596/668/1/012069

来源: IOP

【 摘 要 】

Recent Lattice QCD (LQCD) studies suggest that there are missing resonances in the strange sector of the Hadron Resonance Gas (HRG) model. By adopting the continuous Hagedorn mass spectrum, we present how different medium compositions influence the HRG predictions of conserved charge fluctuations. It is shown that missing strange resonances may be partially accounted for by applying the Hagedorn mass spectrum extracted from experimentally established hadrons. On the other hand, the strange-baryonic spectra, extracted from LQCD results for fluctuations, are found to be consistent with the unconfirmed states in the Particle Data Group (PDG) database, whilst the strange-mesonic spectrum points towards yet undiscovered states in the intermediate mass region.