Thermal QGP dilepton radiation exceeds charm-decay contributions in central Au+Au collisions below 25-30 GeV, with mu_B dependence shown for the first time in PHSD.
Parton transport and hadronization from the dynamical quasiparticle point of view
6 Pith papers cite this work. Polarity classification is still indexing.
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abstract
The hadronization of an expanding partonic fireball is studied within the Parton-Hadron-Strings Dynamics (PHSD) approach which is based on a dynamical quasiparticle model (DQPM) matched to reproduce lattice QCD results in thermodynamic equilibrium. Apart from strong parton interactions the expansion and development of collective flow is driven by strong gradients in the parton mean-fields. An analysis of the elliptic flow $v_2$ demonstrates a linear correlation with the spatial eccentricity $\epsilon$ as in case of ideal hydrodynamics. The hadronization occurs by quark-antiquark fusion or 3 quark/3 antiquark recombination which is described by covariant transition rates. Since the dynamical quarks become very massive, the formed resonant 'pre-hadronic' color-dipole states ($q\bar{q}$ or $qqq$) are of high invariant mass, too, and sequentially decay to the groundstate meson and baryon octets increasing the total entropy. This solves the entropy problem in hadronization in a natural way. The resulting particle ratios turn out to be in line with those from a grandcanonical partition function at temperature $T \approx 170$ MeV rather independent from the initial temperature and indicate an approximate strangeness equilibration.
verdicts
UNVERDICTED 6representative citing papers
Preliminary simulations show charm quarks lose significantly less transverse momentum in a fluctuating color string medium than in the hydrodynamic expansion of the EPOS4HQ model.
PHQMD simulations with momentum-dependent potentials show that a soft momentum-dependent EoS calibrated to pA data reproduces experimental proton and cluster flows at midrapidity better than static EoS variants, while cluster formation method affects flow patterns.
Simulations indicate that heavy-ion collisions enhance the visibility of charmed-meson femtoscopic correlations compared to pp collisions, providing a probe for exotic hadronic states.
Remler formalism with in-medium heavy-quark potential describes charmonium yields at SPS energies and supplies estimates for FAIR energies after calibration on p+p and p+A collisions.
CNN trigger for QGP events reaches 83.7% accuracy on reconstructed Au+Au events at 30 AGeV after training on PHSD and cross-validation on UrQMD, with deployment via lightweight C++ package.
citing papers explorer
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Probing the QCD Phase Structure with Dileptons from SIS to LHC Energies
Thermal QGP dilepton radiation exceeds charm-decay contributions in central Au+Au collisions below 25-30 GeV, with mu_B dependence shown for the first time in PHSD.
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Energy loss of heavy-flavor quarks in color string medium
Preliminary simulations show charm quarks lose significantly less transverse momentum in a fluctuating color string medium than in the hydrodynamic expansion of the EPOS4HQ model.
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Systematic study of flow of protons and light clusters in intermediate-energy heavy-ion collisions with momentum-dependent potentials
PHQMD simulations with momentum-dependent potentials show that a soft momentum-dependent EoS calibrated to pA data reproduces experimental proton and cluster flows at midrapidity better than static EoS variants, while cluster formation method affects flow patterns.
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Accessing Exotic Hadronic States via Charmed-Meson Femtoscopy in Relativistic Heavy-Ion Collisions
Simulations indicate that heavy-ion collisions enhance the visibility of charmed-meson femtoscopic correlations compared to pp collisions, providing a probe for exotic hadronic states.
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Charmonium production at SPS and FAIR energies
Remler formalism with in-medium heavy-quark potential describes charmonium yields at SPS energies and supplies estimates for FAIR energies after calibration on p+p and p+A collisions.
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CNN-Based Online Trigger for QGP Event Selection
CNN trigger for QGP events reaches 83.7% accuracy on reconstructed Au+Au events at 30 AGeV after training on PHSD and cross-validation on UrQMD, with deployment via lightweight C++ package.