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Probing of EoS with clusters and hypernuclei
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abstract
The study of the nuclear equation-of-state (EoS) is a one of the primary goals of experimental and theoretical heavy-ion physics. The comparison of recent high statistics data from the STAR Collaboration with transport models provides a unique possibility to address this topic in a yet unexplored energy domain. Employing the microscopic N-body Parton-Hadron-Quantum-Molecular Dynamics (PHQMD) transport approach, which allows to describe the propagation and interactions of hadronic and partonic degrees of freedom including cluster and hyper-nucleus formation and dynamics, we investigate the influence of different EoS on bulk observables, the multiplicity, $p_T$ and rapidity distributions of protons, $\Lambda$s and clusters up to A=4 as well as their influence on the collective flow. We explore three different EoS: two static EoS, dubbed 'soft' and 'hard', which differ in the compressibility modulus, as well as a soft momentum dependent EoS. We find that a soft momentum dependent EoS reproduces most baryon and cluster observables, including the flow observables, quantitatively, however, hard EOS show a similar trend.
Forward citations
Cited by 5 Pith papers
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Effects of light-cluster degrees of freedom on collective flows in heavy-ion collisions at FOPI energies
Explicitly propagating light clusters in a Boltzmann-Uehling-Uhlenbeck transport model substantially modifies predicted proton v1-v4 flows at low FOPI energies (120-400 A MeV) but not above 600 A MeV.
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Probing (Hyper)Nuclei Wave Functions and Production Mechanisms in $\sqrt{s_{\rm{NN}}}=200$ GeV Isobar Collisions at RHIC
Isobar collision yields of ³_ΛH and light nuclei favor coalescence with non-Gaussian hypertriton wave functions that carry enhanced short-distance d–Λ probability, inconsistent with a Gaussian ansatz tied to the measu...
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Nuclear equation-of-state at high density and multi-messenger astronomy: contribution of heavy-ion collisions
Review of heavy-ion collision constraints on the nuclear EoS that produce neutron-star pressure profiles consistent with gravitational-wave and pulsar observations up to 2.5 n_sat.
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Nuclear equation-of-state at high density and multi-messenger astronomy: contribution of heavy-ion collisions
Heavy-ion collision data and neutron-star observations yield consistent nuclear equations of state, with laboratory accuracy matching astronomical accuracy up to about 1.5 times nuclear saturation density.
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Study on the equation-of-state with light clusters and hypernuclei
A review of transport-model constraints on the nuclear equation of state from flow of protons, light clusters, and hypernuclei, concluding that soft momentum-dependent potentials fit few-GeV data best.
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