Heavy Ion

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Subrata Pal - One of the best experts on this subject based on the ideXlab platform.

  • multiphase transport model for relativistic Heavy Ion collisIons
    Physical Review C, 2005
    Co-Authors: Ziwei Lin, Che Ming Ko, Baoan Li, Bin Zhang, Subrata Pal
    Abstract:

    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.

Raimond Snellings - One of the best experts on this subject based on the ideXlab platform.

  • collective flow and viscosity in relativistic Heavy Ion collisIons
    Annual Review of Nuclear and Particle Science, 2013
    Co-Authors: Ulrich W Heinz, Raimond Snellings
    Abstract:

    We review collective flow, its anisotropies, and its event-to-event fluctuatIons in relativistic Heavy-Ion collisIons, as well as the extractIon of the specific shear viscosity of quark–gluon plasma from collective flow data collected in Heavy-Ion collisIon experiments at RHIC and the LHC. We emphasize the similarities between the Big Bang of our universe and the Little Bangs created in Heavy-Ion collisIons.

  • collective flow and viscosity in relativistic Heavy Ion collisIons
    arXiv: Nuclear Theory, 2013
    Co-Authors: Ulrich Heinz, Raimond Snellings
    Abstract:

    Collective flow, its anisotropies and its event-to-event fluctuatIons in relativistic Heavy-Ion collisIons, and the extractIon of the specific shear viscosity of quark-gluon plasma (QGP) from collective flow data collected in Heavy-Ion collisIon experiments at RHIC and LHC are reviewed. Specific emphasis is placed on the similarities between the Big Bang of our universe and the Little Bangs created in Heavy-Ion collisIons.

W. Krötz - One of the best experts on this subject based on the ideXlab platform.

  • Heavy Ion beam pumped visible laser
    Applied Physics Letters, 1994
    Co-Authors: Andreas Ulrich, J. Wieser, A. Brunnhuber, W. Krötz
    Abstract:

    Heavy Ion beam pumped laser actIon was observed in the visible spectral range. This result is encouraging for the potential development of shorter wavelength lasers pumped by Heavy Ion beams. The laser operated on the 585.25‐nm neon line in He‐Ne‐Ar, He‐Ne‐Kr, and He‐Ne‐Xe mixtures. The laser gas pressure was, typically, 800 hPa and the mixing ratio 92% He, 6% Ne, and 2% Ar (Kr,Xe). Quasicontinuous laser actIon was obtained using a chopped beam of 120‐MeV 35 Cl Ions for pumping. Preliminary spectroscopic studies of the laser medium show selective excitatIon of the 585.25‐nm line.

Che Ming Ko - One of the best experts on this subject based on the ideXlab platform.

  • exotic hadrons from Heavy Ion collisIons
    Progress in Particle and Nuclear Physics, 2017
    Co-Authors: Tetsuo Hyodo, Daisuke Jido, Kenta Miyahara, M. Nielsen, Che Ming Ko, Kenji Morita, Saori Maeda, Takayasu Sekihara, Akira Ohnishi, Taesoo Song
    Abstract:

    High energy Heavy Ion collisIons are excellent ways for producing Heavy hadrons and composite particles, including the light (anti)nuclei. With upgraded detectors at the Relativistic Heavy Ion Collider (RHIC) and the Large Hadron Collider (LHC), it has become possible to measure hadrons beyond their ground states. Therefore, Heavy Ion collisIons provide a new method for studying exotic hadrons that are either molecular states made of various hadrons or compact system consisting of multiquarks. Because their structures are related to the fundamental properties of Quantum Chromodynamics (QCD), studying exotic hadrons is currently one of the most active areas of research in hadron physics. Experiments carried out at various accelerator facilities have indicated that some exotic hadrons may have already been produced. The present review is a summary of the current understanding of a selected set of exotic particle candidates that can be potentially measured in Heavy Ion collisIons. It also includes discussIons on the productIon of resonances, exotics and hadronic molecular states in these collisIons based on the coalescence model and the statistical model. A more detailed discussIon is given on the results from these models, leading to the conclusIon that the yield of a hadron that is a compact multiquark state is typically an order of magnitude smaller than if it is an excited hadronic state with normal quark numbers or a loosely bound hadronic molecule. AttentIon is also given to some of the proposed Heavy exotic hadrons that could be produced with sufficient abundance in Heavy Ion collisIons because of the significant numbers of charm and bottom quarks that are produced at RHIC and even larger numbers at LHC, making it possible to study them in these experiments. Further included in the discussIon are the general formalism for the coalescence model that involves resonance particles and its implicatIon on the present estimated yield for resonance productIon. Finally, a review is given on recent studies to constrain the hadron–hadron interactIon through correlatIon measurements in Heavy Ion collisIons and their implicatIons on the interpretatIon and the possible existence of exotic states in hadronic interactIons.

  • multiphase transport model for relativistic Heavy Ion collisIons
    Physical Review C, 2005
    Co-Authors: Ziwei Lin, Che Ming Ko, Baoan Li, Bin Zhang, Subrata Pal
    Abstract:

    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.

Ziwei Lin - One of the best experts on this subject based on the ideXlab platform.

  • multiphase transport model for relativistic Heavy Ion collisIons
    Physical Review C, 2005
    Co-Authors: Ziwei Lin, Che Ming Ko, Baoan Li, Bin Zhang, Subrata Pal
    Abstract:

    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.