scholarly journals - Hot and dense nuclear matter in high energy heavy ion collisions

2010 ◽  
Author(s):  
Andrea Lavagno
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Ion Collisions ◽  
Dense Nuclear Matter

scholarly journals Collective Sideward Flow of Nuclear Matter in Violent High-Energy Heavy-Ion Collisions

1980 ◽  
Vol 44 (11) ◽  
pp. 725-728 ◽  
Author(s):  
Horst Stöcker ◽  
Jouchim A. Maruhn ◽  
Walter Greiner
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Ion Collisions

Thermodynamic instabilities in high energy heavy-ion collisions

2015 ◽  
Vol 29 (18) ◽  
pp. 1550092
Author(s):  
A. Lavagno ◽  
D. Pigato ◽  
G. Gervino
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Baryon Density ◽  
Mechanical Instability ◽  
Ion Collisions ◽  
Nuclear Ground State ◽  
Strangeness Content

One of the very interesting aspects of high energy heavy-ion collisions experiments is a detailed study of the thermodynamical properties of strongly interacting nuclear matter away from the nuclear ground state. In this direction, many efforts were focused on searching for possible phase transitions in such collisions. We investigate thermodynamic instabilities in a hot and dense nuclear medium where a phase transition from nucleonic matter to resonance-dominated [Formula: see text]-matter can take place. Such a phase transition can be characterized by both mechanical instability (fluctuations on the baryon density) and by chemical-diffusive instability (fluctuations on the strangeness concentration) in asymmetric nuclear matter. In analogy with the liquid–gas nuclear phase transition, hadronic phases with different values of antibaryon–baryon ratios and strangeness content may coexist. Such a physical regime could be, in principle, investigated in the future high-energy compressed nuclear matter experiments which will make it possible to create compressed baryonic matter with a high net baryon density.

scholarly journals Jets of nuclear matter from high energy heavy ion collisions

1982 ◽  
Vol 25 (4) ◽  
pp. 1873-1876 ◽  
Author(s):  
H. Stöcker ◽  
L. P. Csernai ◽  
G. Graebner ◽  
G. Buchwald ◽  
H. Kruse ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Ion Collisions

Study of Signals of Hot and Dense Nuclear Matter in Heavy-Ion Collisions at NICA Energies Using Micro- and Macroscopic Models

2021 ◽  
Vol 52 (4) ◽  
pp. 544-548
Author(s):  
E. E. Zabrodin ◽  
A. S. Botvina ◽  
L. V. Bravina ◽  
G. Kh. Eyyubova ◽  
Yu. B. Ivanov ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Macroscopic Models ◽  
Ion Collisions ◽  
Dense Nuclear Matter

RELATIVISTIC HEAVY-ION COLLISIONS: RECENT RESULTS FROM RHIC

2004 ◽  
Vol 19 (07) ◽  
pp. 1111-1118
Author(s):  
D. HARDTKE
Keyword(s):  
Energy Loss ◽  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Jet Quenching ◽  
Relativistic Heavy Ion Collisions ◽  
Dense Medium ◽  
Relativistic Heavy Ion Collider ◽  
Ion Collisions

High energy collisions of heavy nuclei at the Relativistic Heavy-Ion Collider permit the study of nuclear matter at extreme densities and temperatures. Selected experimental highlights from the early RHIC program are presented. Measurements of the total multiplicity in heavy-ion collisions show a surprising similarity to measurements in e+e- collisions after nuclear geometry is taken into account. RHIC has sufficient center-of-mass energy to use large transverse momentum particles and jets as a probe of the nuclear medium. Signatures of "jet quenching" due to radiative gluon energy loss of fast partons in a dense medium are observed for the first time at RHIC. In order to account for this energy loss, initial energy densities of 30-100 times normal nuclear matter density are required.

scholarly journals Transport Model Approach to Λ and Λ¯ Polarization in Heavy-Ion Collisions

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1852
Author(s):  
Larissa V. Bravina ◽  
Kyrill A. Bugaev ◽  
Oleksandr Vitiuk ◽  
Evgeny E. Zabrodin
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Transport Model ◽  
Center Of Mass ◽  
Heavy Ion ◽  
Baryon Density ◽  
Dense Medium ◽  
Interaction Point ◽  
Ion Collisions ◽  
Dense Nuclear Matter

This paper investigates the symmetry breaking between the polarizations of Λ and Λ¯ hyperons in relativistic collisions of heavy ions at intermediate and low energies. The microscopic transport model UrQMD is employed to study the thermal vorticity of hot and dense nuclear matter formed in non-central Au + Au collisions at center-of-mass energies 7.7≤sNN≤62.4 GeV. The whole volume of an expanding fireball is subdivided into small cubic cells. Then, we trace the final Λ and Λ¯ hyperons back to their last interaction point within a certain cell. Extracting the bulk parameters, such as energy density, net baryon density, and net strangeness of the hot and dense medium in the cell, one can obtain the cell temperature and the chemical potentials at the time of the hyperon emission. To do this, the extracted characteristics have to be fitted to the statistical model (SM) of ideal hadron gas. After that, the vorticity of nuclear matter and polarization of both hyperons are calculated. We found that the polarization of both Λ and Λ¯ increases with decreasing energy of heavy-ion collisions. The stronger polarization of Λ¯ is explained by (i) the slightly different freeze-out conditions of both hyperons and (ii) the different space–time distributions of Λ and Λ¯.

Dynamics of high energy heavy ion collisions — nuclear matter at high density and temperature

1982 ◽  
Vol 387 (1) ◽  
pp. 205-217 ◽  
Author(s):  
H. Stöcker ◽  
G. Buchwald ◽  
L.P. Csernai ◽  
G. Graebner ◽  
J.A. Maruhn ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
High Density ◽  
Ion Collisions

PROBING THE NUCLEAR MATTER AT HIGH BARYON AND ISOSPIN DENSITY WITH HEAVY ION COLLISIONS

2010 ◽  
Vol 19 (05n06) ◽  
pp. 856-868
Author(s):  
M. DI TORO ◽  
M. COLONNA ◽  
G. FERINI ◽  
V. GIORDANO ◽  
V. GRECO ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Quark Matter ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Baryon Density ◽  
Mixed Phase ◽  
Hadronic Matter ◽  
Ion Collisions ◽  
Asymmetric Matter

Heavy Ion Collisions (HIC) represent a unique tool to probe the in-medium nuclear interaction in regions away from saturation. High Energy Collisions are studied in order to access nuclear matter properties at high density. Particular attention is devoted to the selection of observables sensitive to the poorly known symmetry energy at high baryon density, of large fundamental interest, even for the astrophysics implications. Using fully consistent covariant transport simulations built on effective field theories we are testing isospin observables ranging from nucleon/cluster emissions, collective flows (in particular the elliptic, squeeze out, part) and meson production. The possibility to shed light on the controversial neutron/proton effective mass splitting in asymmetric matter is also stressed. The "symmetry" repulsion at high baryon density will also lead to an "earlier" hadron-deconfinement transition in n -rich matter. The phase transition of hadronic to quark matter at high baryon and isospin density is analyzed. Nonlinear relativistic mean field models are used to describe hadronic matter, and the MIT bag model is adopted for quark matter. The boundaries of the mixed phase and the related critical points for symmetric and asymmetric matter are obtained. Isospin effects appear to be rather significant. The binodal transition line of the ( T ,ρB) diagram is lowered in a region accessible to heavy ion collisions in the energy range of the new planned FAIR/NICA facilities. Some observable effects of the mixed phase are suggested, in particular a neutron distillation mechanism. Theoretically a very important problem appears to be the suitable treatment of the isovector part of the interaction in effective QCD lagrangian approaches.

scholarly journals Elliptic flow of colored glass in high energy heavy ion collisions

2003 ◽  
Vol 554 (1-2) ◽  
pp. 21-27 ◽  
Author(s):  
Alex Krasnitz ◽  
Yasushi Nara ◽  
Raju Venugopalan
Keyword(s):  
Heavy Ion Collisions ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
High Energy ◽  
Colored Glass ◽  
Ion Collisions

scholarly journals Primary Projectile Fragmentation Distribution in High Energy Heavy Ion Collisions

1984 ◽  
Vol 71 (6) ◽  
pp. 1429-1431 ◽  
Author(s):  
Y. Kitazoe ◽  
O. Hashimoto ◽  
H. Toki ◽  
Y. Yamamura ◽  
M. Sano
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
High Energy ◽  
Projectile Fragmentation ◽  
Ion Collisions
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