Influence of modified light-flavor hadron spectra on particle yields in the statistical hadronization model

Abstract

Hadron production in relativistic nuclear collisions is well described in the framework of the Statistical Hadronization Model (SHM). We investigate the influence on SHM predictions of hadron mass spectra for light-flavor baryons and mesons modified by the addition of about 500 new states as predicted by lattice QCD and a relativistic quark model. The deterioration of the resulting thermodynamic fit quality obtained for PbPb collision data at sqrt(s_nn) = 2.76 TeV suggests that the additional states are not suited to be naively used since also interactions among the states as well as non-resonant contributions need to be considered in the SHM approach. Incorporating these effects via the pion nucleon interaction determined from measured phase shifts leads again to excellent reproduction of the experimental data. This is a strong indication that at least the additional nucleon excited states cannot be understood and used as independent resonances.

arXiv comment20 pages, 5 figures

References in corpus (32)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Thermal hadron production in relativistic nuclear collisions: the hadron mass spectrum, the horn, and the QCD phase transition
• Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
• Excited state baryon spectroscopy from lattice QCD
• K${}_{\mathrm{S}}^0$ and $\mathrm{\Lambda }$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Multi-strange baryon production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Mass spectra and Regge trajectories of light mesons in the relativistic quark model
• Production of light nuclei and anti-nuclei in pp and Pb-Pb collisions at LHC energies
• K*(892)${}^0$ and $\Phi$(1020) production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freeze-out in Heavy Ion Collisions
• Lattice QCD and heavy ion collisions: a review of recent progress
• ${}_{\Lambda }^3\mathrm{H}$ and ${}_{\bar{\Lambda }}^3\overline{\mathrm{H}}$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• Interacting hadron resonance gas meets lattice QCD
• Hadron yields and the phase diagram of strongly interacting matter
• Loosely-bound objects produced in nuclear collisions at the LHC
• Canonical statistical model analysis of p-p, p-Pb, and Pb-Pb collisions at the LHC
• Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements
• Transverse momentum distributions of charmonium states with the statistical hadronization model
• Production of ${}^4$He and ${}^4\overline{\text{He}}$ in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV at the LHC
• The thermal proton yield anomaly in Pb-Pb collisions at the LHC and its resolution
• Status of Chemical Freeze-Out
• S-matrix analysis of the baryon electric charge correlation
• Sensitivity of multiplicity fluctuations to freeze-out conditions in heavy ion collisions
• Matching the Hagedorn mass spectrum with Lattice QCD results
• Resonances in QCD
• The Phase Diagram of Strongly-Interacting Matter
• In-Medium Modifications of Hadron Masses and Chemical Freeze-Out in Ultra-Relativistic Heavy-Ion Collisions
• Sequential Strangeness Freeze-out
• Roper resonance -- solution to the fifty year puzzle
• Locating the freeze-out curve in heavy-ion collisions

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