High density matter physics at J-PARC-HI

Sakaguchi, T.

doi:10.22323/1.347.0189

Cited by 5 publications

(4 citation statements)

References 18 publications

(21 reference statements)

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“…[15,16]. The maximal densities achieved in collisions at NICA-FAIR energies are comparable with those found within the UrQMD and QGSM models [9] in a small central cell of 0.5×0.5×0.5 fm 3 size while considerably higher that those [9] in a large central cell of 5×5×5 fm 3 . In contrast to the 3FD results, these highest values are achieved at the nonequilibrium stage in terms of Ref.…”

Section: Matter Evolution In Central Region Of Colliding Nucleisupporting

confidence: 72%

“…At LHC and top RHIC collision energies systems with a very small net baryon density but rather high temperature are formed, while it is expected that the creation of the high baryon densities occurs at more moderate collision energies, such as those at the Nuclotron-based Ion Collider fAcility (NICA) in Dubna [1] and the Facility for Antiproton and Ion Research (FAIR) in Darmstadt [2] under construction, at the low-energy end of the Relativistic Heavy Ion Collider (RHIC), i.e. the Beam Energy Scan (BES) program at RHIC, and at planned J-PARC-HI facility [3]. In the present paper we are interested precisely in these moderate-energy heavy-ion collisions.…”

Section: Introductionmentioning

confidence: 99%

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Equilibration and baryon densities attainable in relativistic heavy-ion collisions

Ivanov

Soldatov

2020

Phys. Rev. C

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Kinetic equilibration of the matter and baryon densities attained in central region of colliding Au+Au nuclei in the energy range of √ sNN = 3.3-39 GeV are examined within the model of the three-fluid dynamics. It is found that the kinetic equilibration is faster at higher collision energies: the equilibration time (in the c.m. frame of colliding nuclei) rises from ∼5 fm/c at √ sNN = 3.3 GeV to ∼1 fm/c at 39 GeV. The chemical equilibration, and thus thermalization, takes longer. We argue that for informative comparison of predictions of different models it is useful to calculate an invariant 4-volume (V4), where the proper density the equilibrated matter exceeds certain value. The advantage of this 4-volume is that it does not depend on specific choice of the 3-volume in different studies and takes into account the lifetime of the high-density region, which also matters. The 4-volume V4 = 100 fm 4 /c is chosen to compare the baryon densities attainable at different different energies. It is found that the highest proper baryon density increases with the collision energy rise, from nB/n0 ≈ 4 at 3.3 GeV to nB/n0 ≈ 30 at 39 GeV. These highest densities are achieved in the central region of colliding system.

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Section: Matter Evolution In Central Region Of Colliding Nucleisupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Equilibration and baryon densities attainable in relativistic heavy-ion collisions

Ivanov

Soldatov

2020

Phys. Rev. C

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“…Besides RHIC and LHC, there are various other experimental programs for heavy-ion collisions, including the earlier NA49 [55,56] and ongoing NA61/SHINE [57,58] experiments at the Super Proton Synchrotron (SPS) [59], the High Acceptance DiElecton Spectrometer (HADES) which is installed at SIS18 at the GSI Helmholtzzentrum für Schwerionenforschung (Germany) [60]. There are other planned experiments, such as the Compressed Matter Experiment (CBM) at the Facility for Antiproton and Ion Research (FAIR) [61,62] and the Multi Purpose Detector (MPD) at NICA (Nuclotron-based Ion Collider fAcility) at the Joint Institute for Nuclear Research (Dubna, Russia) [63] which are both in advanced stages of construction, as well as the planned CEE (CSR External Target) at High Intensity Heavy-Ion Accelerator Facility (HIAF) in China [64], and a possible future heavy-ion program at J-PARC (Japan Proton Accelerator Research Complex) which presently is a high intensity proton accelerator facility [65].…”

Section: Qcd Phase Diagram and The Rhic Beam Energy Scanmentioning

confidence: 99%

Hydrodynamic description of the baryon-charged quark-gluon plasma

2021

Preprint

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One of the primary goals of nuclear physics is studying the phase diagram of Quantum Chromodynamics, where a hypothetical critical point serves as a landmark. A systematic model-data comparison of heavy-ion collisions at center-of-mass energies between 1 and 100 GeV per nucleon is essential for locating the critical point and the phase boundary between the deconfined quark-gluon plasma and the confined hadron resonance gas. At these energies the net baryon density of the system can be high and critical fluctuations can become essential in the presence of the critical point. Simulating their dynamical evolution thus becomes an indispensable part of theoretical modeling.In this thesis we first present the (3+1)-dimensional relativistic hydrodynamic code BEShydro, which solves the equations of motion of second-order Denicol-Niemi-Molnar-Rischke theory, including bulk and shear viscous components as well as baryon diffusion current. We then study the effects caused by the baryon diffusion on the longitudinal dynamics and on the phase diagram trajectories of fluid cells at different space-time rapidities of the system, and how they are affected by critical dynamics near the critical point. We finally explore the evolution of non-hydrodynamic slow processes describing long wavelength critical fluctuations near the critical point, by extending the conventional hydrodynamic description by coupling it to additional explicitly evolving slow modes, and their back-reaction to the bulk matter properties.

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“…Besides the RHIC-BES, there are other experimental facilities around the world that can study the baryon-rich region of the phase diagram, such as the NA61/SHINE experiment at SPS [75] and the HADES experiment at GSI [76]. Among future facilities with similar goals is the CBM experiment at FAIR in Darmstadt [77], the MPD experiment at NICA in Dubna [78] and the HEF at J-PARC in Japan [79]. The first phase of the beam energy scan at RHIC already resulted in many exciting observations, and the ongoing data analysis of the second phase is even more promising.…”

Section: Uncharted Territories Of the Qcd Phase Diagrammentioning

confidence: 99%

Experimental and phenomenological investigations of femtoscopic correlation functions in heavy- ion collisions

Kincses¹

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Introduction to heavy-ion physics and femtoscopy 1 Exploring the properties of the Quark-Gluon-Plasma 1.1 A brief history of heavy-ion physics 3 1.2 Milestones in the discovery of QGP 4 1.3 Uncharted territories of the QCD phase diagram 10 2 Experimental facilities at BNL-RHIC 13 2.1 The PHENIX experiment 13 2.2 The STAR experiment 17 3 Intensity correlations on cosmic and nuclear scales 21 3.1 Radio astronomy and HBT-correlations 21 3.2 Femtoscopy in heavy-ion physics 23 3.3 Experimental methods of femtoscopy 31

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High density matter physics at J-PARC-HI

Cited by 5 publications

References 18 publications

Equilibration and baryon densities attainable in relativistic heavy-ion collisions

Equilibration and baryon densities attainable in relativistic heavy-ion collisions

Hydrodynamic description of the baryon-charged quark-gluon plasma

Experimental and phenomenological investigations of femtoscopic correlation functions in heavy- ion collisions

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