Antikaon production and medium effects in heavy-ion collisions at AGS

Song, Guang; Li, Bao-An; Ko, C. M.

doi:10.1016/s0375-9474(98)00649-6

Cited by 20 publications

(8 citation statements)

References 49 publications

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“…v 1 for K + is similar to proton flow (normal flow) and K − flow is anticorrelated (anti-flow) in hybrid mode. Our results are in disagreement with observations reported in [58,59]. Experimentally, it is found that K + shows anti-flow and K − shows normal flow as nucleons due to different potentials they experience while propagating through medium derived from the effective chiral models [60].…”

Section: Rapidity Dependencecontrasting

confidence: 99%

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

2019

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In this article, we examine the equation of state (EoS) dependence of the anisotropic flow parameters (v1, v2 and v4) of charged and identified hadrons, as a function of transverse momentum (pT), rapidity (yc.m.) and the incident beam energy (E Lab ) in mid-central Au + Au collisions in the energy range E Lab = 6 − 25 A GeV. Simulations are carried out by employing different variants of the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model, namely the pure transport (cascade) mode and the hybrid mode. In the hybrid mode, transport calculations are coupled with the ideal hydrodynamical evolution. Within the hydrodynamic scenario, two different equations of state (EoS) viz. Hadron gas and Chiral + deconfinement EoS have been employed separately to possibly mimic the hadronic and partonic scenarios, respectively. It is observed that the flow parameters are sensitive to the onset of hydrodynamic expansion of the fireball in comparison to the pure transport approach. The results would be useful as predictions for the upcoming low energy experiments at Facility for Antiproton and Ion Research (FAIR) and Nuclotron-based Ion Collider fAcility (NICA).

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Section: Rapidity Dependencecontrasting

confidence: 99%

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

2019

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“…Kaon elastic scatterings with nucleons and baryon resonances are included with a constant cross section of 10 mb [14]. Antikaon elastic scatterings with nucleons and inelastic channels, such as K(N ∆N * ) ↔ π(ΛΣ), are included [81] using parameterized experimental data [82]. Also included are kaon production channels involving three-body final states, (πρω)(N ∆N * ) → K KN [81].…”

Section: The Art Modelmentioning

confidence: 99%

“…Antikaon elastic scatterings with nucleons and inelastic channels, such as K(N ∆N * ) ↔ π(ΛΣ), are included [81] using parameterized experimental data [82]. Also included are kaon production channels involving three-body final states, (πρω)(N ∆N * ) → K KN [81]. Because of the difficulty associated with the three-body kinematics, the inverse kaon annihilation reactions of the above channels are neglected.…”

Section: The Art Modelmentioning

confidence: 99%

Multiphase transport model for relativistic heavy ion collisions

et al. 2005

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We describe in detail how the different components of a multiphase transport (AMPT) model that uses the heavy ion jet interaction generator (HIJING) for generating the initial conditions, Zhang's parton cascade (ZPC) for modeling partonic scatterings, the Lund string fragmentation model or a quark coalescence model for hadronization, and a relativistic transport (ART) model for treating hadronic scatterings are improved and combined to give a coherent description of the dynamics of relativistic heavy ion collisions. We also explain the way parameters in the model are determined and discuss the sensitivity of predicted results to physical input in the model. Comparisons of these results to experimental data, mainly from heavy ion collisions at the BNL Relativistic Heavy Ion Collider, are then made in order to extract information on the properties of the hot dense matter formed in these collisions.

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“…The predictions of the theoretical approaches, outlined above, on kaon properties in dense matter can be tested by analyzing proton-nucleus and heavy-ion collision data on kaon spectra, excitation functions (see Section 3.4) and collective flow [34,[99][100][101][112][113][114][115]. The latter observable was also recognised as Figure 16: The K + spectra from CBUU calculations (solid lines) in comparison to the data from the ANKE Collaboration [123,127] for p+C reactions at 1.0, 1.2, 1.5, 2.0 and 2.3 GeV .…”

Section: Determination Of the K + -Nucleus Real Potentialmentioning

confidence: 99%

Meson–nucleus potentials and the search for meson–nucleus bound states

Metag

Nanova

Paryev

2017

Progress in Particle and Nuclear Physics

108

102

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Recent experiments studying the meson-nucleus interaction to extract meson-nucleus potentials are reviewed. The real part of the potentials quantifies whether the interaction is attractive or repulsive while the imaginary part describes the meson absorption in nuclei. The review is focused on mesons which are sufficiently long-lived to potentially form meson-nucleus quasi-bound states. The presentation is confined to meson production off nuclei in photon-, pion-, proton-, and lightion induced reactions and heavy-ion collisions at energies near the production threshold. Tools to extract the potential parameters are presented. In most cases, the real part of the potential is determined by comparing measured meson momentum distributions or excitation functions with collision model or transport model calculations. The imaginary part is extracted from transparency ratio measurements. Results on K + , K 0 , K − , η, η , ω, and φ mesons are presented and compared with theoretical predictions. The interaction of K + and K 0 mesons with nuclei is found to be weakly repulsive, while the K − , η, η , ω and φ meson-nucleus potentials are attractive, however, with widely different strengths. Because of meson absorption in the nuclear medium the imaginary parts of the meson-nucleus potentials are all negative, again with a large spread. An outlook on planned experiments in the charm sector is given. In view of the determined potential parameters, the criteria and chances for experimentally observing meson-nucleus quasi-bound states are discussed. The most promising candidates appear to be the η and η mesons.

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Antikaon production and medium effects in heavy-ion collisions at AGS

Cited by 20 publications

References 49 publications

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

Anisotropic flow of charged and identified hadrons at FAIR energies and its dependence on the nuclear equation of state

Multiphase transport model for relativistic heavy ion collisions

Meson–nucleus potentials and the search for meson–nucleus bound states

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