scholarly journals Elliptic flow for φ-mesons in Cu+Au and U+U collisions

2021 ◽  
Vol 2103 (1) ◽  
pp. 012133
Author(s):  
Iu M Mitrankov ◽  
E V Bannikov ◽  
A Ya Berdnikov ◽  
Ya A Berdnikov ◽  
D O Kotov
Keyword(s):  
Hydrodynamic Model ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Kinetic Properties ◽  
Specific Viscosity ◽  
Flow Measurements ◽  
Model Predictions ◽  
Viscous Hydrodynamic ◽  
First Time

Abstract An important goal of current ultra-relativistic heavy ion research is the investigation of the quark-gluon plasma (QGP). Measurements of elliptic flow lend insight on reaction dynamics and are important for defining parameters of viscous hydrodynamic, which can describe QGP behavior. In this paper elliptic flow for φ-mesons in Cu+Au collisions at s N N = 200 GeV and in U+U collisions at s N N = 193 GeV GeV is studied as a function of kinetic properties and centrality. The obtained results are compared to hydrodynamic model predictions. New FVTX detector and combinations of different approaches of flow measurements provide a possibility to measure the elliptic flow for the φ-mesons for the first time as a function of centrality at PHENIX. The elliptic flow for φ-mesons in Cu+Au and U+U collisions as function of transverse kinetic energy per one quark follows the trend for other hadrons with respect to the number of quarks in hadrons, regardless of centrality. This result along with agreement of obtained data to hydrodynamic model iEBE-VISHNU predictions suggests that QGP can be described with viscous hydrodynamic with specific viscosity η/s = 1/(4π).

scholarly journals On Pseudorapidity Distribution and Speed of Sound in High Energy Heavy Ion Collisions Based on a New Revised Landau Hydrodynamic Model

2015 ◽  
Vol 2015 ◽  
pp. 1-23 ◽  
Author(s):  
Li-Na Gao ◽  
Fu-Hu Liu
Keyword(s):  
Speed Of Sound ◽  
Hydrodynamic Model ◽  
Quark Gluon Plasma ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
High Energy ◽  
Relativistic Heavy Ion Collider ◽  
Central Source ◽  
Ion Collisions

We propose a new revised Landau hydrodynamic model to study systematically the pseudorapidity distributions of charged particles produced in heavy ion collisions over an energy range from a few GeV to a few TeV per nucleon pair. The interacting system is divided into three sources, namely, the central, target, and projectile sources, respectively. The large central source is described by the Landau hydrodynamic model and further revised by the contributions of the small target/projectile sources. The modeling results are in agreement with the available experimental data at relativistic heavy ion collider, large hadron collider, and other energies for different centralities. The value of square speed of sound parameter in different collisions has been extracted by us from the widths of rapidity distributions. Our results show that, in heavy ion collisions at energies of the two colliders, the central source undergoes a phase transition from hadronic gas to quark-gluon plasma liquid phase; meanwhile, the target/projectile sources remain in the state of hadronic gas. The present work confirms that the quark-gluon plasma is of liquid type rather than being of a gas type.

scholarly journals An Experimental Review on Elliptic Flow of Strange and Multistrange Hadrons in Relativistic Heavy Ion Collisions

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Shusu Shi
Keyword(s):  
Large Hadron Collider ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Hadron Collider ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Relativistic Heavy Ion Collider ◽  
Flow Measurements ◽  
Ion Collisions

Strange hadrons, especially multistrange hadrons, are good probes for the early partonic stage of heavy ion collisions due to their small hadronic cross sections. In this paper, I give a brief review on the elliptic flow measurements of strange and multistrange hadrons in relativistic heavy ion collisions at Relativistic Heavy Ion Collider (RHIC) and Large Hadron Collider (LHC).

REVIEW OF RAPIDITY DENSITY DISTRIBUTIONS IN HEAVY-ION INDUCED INTERACTIONS AT RELATIVISTIC ENERGIES

1995 ◽  
Vol 04 (03) ◽  
pp. 477-536 ◽  
Author(s):  
MADAN M. AGGARWAL ◽  
STEN I.A. GARPMAN
Keyword(s):  
Quark Gluon Plasma ◽  
Charged Particles ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Projectile Energy ◽  
Density Distributions ◽  
Rapidity Density ◽  
Model Predictions ◽  
Deconfinement Phase Transition ◽  
Onset Of Deconfinement

Violent interactions among colliding nuclei ultimately provide the suitable conditions for creating new and hitherto unexplored phenomena like color rope and quark-gluon plasma formation. The systemmatics achieved so far in pseudorapidity and density distributions of charged particles emitted from relativistic nucleus-nucleus collisions is reviewed and comparisons to model predictions are made. Data from both emulsion and counter experiments are utilized and the dependence of the angular spectra on projectile energy, centrality measured by means of forward charge or enegy flow, and on the projectile/target masses are reported. For a few central events, energy densities of the hot overlap zone are estimated to be beyond onset of deconfinement phase transition.

STUDY OF ELLIPTIC FLOW WITH PSEUDO RAPIDITY

2013 ◽  
Vol 22 ◽  
pp. 720-723
Author(s):  
SUDHIR BHARDWAJ ◽  
PANKAJ KALA ◽  
ASHISH AGNIHOTRI
Keyword(s):  
Quark Gluon Plasma ◽  
Heavy Ion Collisions ◽  
Elliptic Flow ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Relativistic Heavy Ion Collisions ◽  
Event Generator ◽  
Flow Variation ◽  
Ion Collisions

The relativistic heavy ion collisions experiments are working on the different energies. In this paper we will study elliptic flow variation with pseudo rapidity at for charge pions and photons using HIJING event generator models. Elliptic flow is a signal in search of quark gluon plasma.

scholarly journals Measurement of Λc+ Baryon Production in p–Pb Collisions with ALICE at the LHC

Proceedings ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 19
Author(s):  
Christopher Hills
Keyword(s):  
Theoretical Model ◽  
Quark Gluon Plasma ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Baryon Production ◽  
Alice Experiment ◽  
Charmed Baryons ◽  
Ion Collisions ◽  
Model Predictions

Charmed baryons and their corresponding baryon-to-meson ratios are important tools to understand hadronisation processes in the Quark-Gluon Plasma produced in heavy-ion collisions. Recent Run 2 measurements in p–Pb collisions at 5.02 TeV, performed with the ALICE experiment at the LHC, are presented and compared to theoretical model predictions.

scholarly journals An analytic hydrodynamical model of rotating 3D expansion in heavy-ion collisions

2016 ◽  
Vol 31 (28n29) ◽  
pp. 1645017 ◽  
Author(s):  
M. I. Nagy ◽  
T. Csörgő
Keyword(s):  
Heavy Ion Collisions ◽  
Collision Energy ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
High Energy ◽  
Flow Measurements ◽  
Ion Collisions ◽  
New Information ◽  
Principal Axes ◽  
Bose Einstein

A new exact and analytic solution of non-relativistic fireball hydrodynamics is presented. It describes an expanding three-axis ellipsoid that rotates along one of its principal axes. The observables are calculated using simple analytic formulas. Following earlier works, it is pointed out that azimuthal oscillation of the off-diagonal Bertsch-Pratt radii of Bose-Einstein correlations as well as rapidity dependent directed and third flow measurements provide means to determine the magnitude of the rotation of the fireball. It is argued that observing this rotation and its dependence on collision energy may lead to new information on the equation of state of the strongly interacting quark gluon plasma produced in high energy heavy ion collisions.

scholarly journals Measurements of Λc+ in pp, p–Pb and Pb–Pb collisions with ALICE at the LHC

2020 ◽  
Vol 1643 (1) ◽  
pp. 012011
Author(s):  
C Hills
Keyword(s):  
Quark Gluon Plasma ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Lhcb Collaboration ◽  
Charm Quarks ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Model Predictions ◽  
Modification Factor

Abstract The baryon-to-meson ratio Λ c + / D 0 and the nuclear modification factor RAA in the charm sector are important observables to gain an understanding of how charm quarks hadronise and lose energy in the Quark-Gluon Plasma produced in heavy-ion collisions. In this contribution, recent measurements performed with the ALICE detector in pp, p–Pb and Pb–Pb collisions at 5.02 TeV are presented and compared with previous measurements in pp collisions at 7 TeV, measurements by the LHCb Collaboration and theoretical model predictions.

scholarly journals Anisotropic Flow Measurements at RHIC

KnE Energy ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 178
Author(s):  
A Taranenko
Keyword(s):  
Strong Evidence ◽  
Quark Gluon Plasma ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Rhic Energy ◽  
Relativistic Heavy Ion Collisions ◽  
Flow Measurements ◽  
Strongly Coupled ◽  
Anisotropic Flow ◽  
Ion Collisions

Anisotropic flow measurements in relativistic-heavy ion collisions at RHIC-BNL and LHC-CERN have provided strong evidence for the formation of a strongly coupled Quark-Gluon Plasma (sQGP). In this article, we briefly review and discuss the recent results of anisotropic flow measurements from the STAR and PHENIX experiments at RHIC, such as 1) new measurements at top RHIC energy √

Sign in / Sign up

Export Citation Format

Share Document