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Phenomenology of Strange Resonances

In: High Performance Computing in Science and Engineering ' 17

Author

Listed:
  • Paolo Alba

    (Goethe Universität Frankfurt, Frankfurt Institute for Advanced Sciences)

  • Rene Bellwied

    (University of Houston, Department of Physics)

  • Szabolcs Borsanyi

    (Wuppertal University, Department of Physics)

  • Zoltan Fodor

    (Wuppertal University, Department of Physics
    Eötvös University, Institute for Theoretical Physics
    Forschungszentrum Jülich, Jülich Supercomputing Centre)

  • Jana Günther

    (Wuppertal University, Department of Physics)

  • Sandor D. Katz

    (Eötvös University, Institute for Theoretical Physics
    MTA-ELTE “Lendület” Lattice Gauge Theory Research Group)

  • Valentina Mantovani Sarti

    (Torino University and INFN, Sezione di Torino, Department of Physics)

  • Jacquelyn Noronha-Hostler

    (University of Houston, Department of Physics)

  • Paolo Parotto

    (University of Houston, Department of Physics)

  • Attila Pasztor

    (Wuppertal University, Department of Physics)

  • Israel Portillo Vazquez

    (University of Houston, Department of Physics)

  • Claudia Ratti

    (University of Houston, Department of Physics)

Abstract

Fluctuations of conserved charges allow to study the chemical composition of hadronic matter. A comparison between lattice simulations and the Hadron Resonance Gas (HRG) model suggested the existence of missing strange resonances. To clarify this issue we calculate the partial pressures of mesons and baryons with different strangeness quantum numbers using lattice simulations in the confined phase of QCD. In order to make this calculation feasible, we perform simulations at imaginary strangeness chemical potentials. We systematically study the effect of different hadronic spectra on thermodynamic observables in the HRG model and compare to lattice QCD results. We show that, for each hadronic sector, the well established states are not enough in order to have agreement with the lattice results. Additional states, either listed in the Particle Data Group booklet (PDG) but not well established, or predicted by the Quark Model (QM), are necessary in order to reproduce the lattice data. For mesons, it appears that the PDG and the quark model do not list enough strange mesons, or that, in this sector, interactions beyond those included in the HRG model are needed to reproduce the lattice QCD results.

Suggested Citation

  • Paolo Alba & Rene Bellwied & Szabolcs Borsanyi & Zoltan Fodor & Jana Günther & Sandor D. Katz & Valentina Mantovani Sarti & Jacquelyn Noronha-Hostler & Paolo Parotto & Attila Pasztor & Israel Portillo, 2018. "Phenomenology of Strange Resonances," Springer Books, in: Wolfgang E. Nagel & Dietmar H. Kröner & Michael M. Resch (ed.), High Performance Computing in Science and Engineering ' 17, pages 61-76, Springer.
    • Handle: RePEc:spr:sprchp:978-3-319-68394-2_4
    DOI: 10.1007/978-3-319-68394-2_4
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