scholarly journals Constraints on rapidity-dependent initial conditions from charged-particle pseudorapidity densities and two-particle correlations

2017 ◽  
Vol 96 (4) ◽  
Author(s):  
Weiyao Ke ◽  
J. Scott Moreland ◽  
Jonah E. Bernhard ◽  
Steffen A. Bass
Keyword(s):  
Charged Particle ◽  
Initial Conditions ◽  
Particle Correlations

scholarly journals CHIRAL MAGNETIC EFFECT AND QCD PHASE TRANSITIONS WITH EFFECTIVE MODELS

2011 ◽  
Vol 26 (25) ◽  
pp. 4335-4365 ◽  
Author(s):  
WEI-JIE FU ◽  
YU-XIN LIU ◽  
YUE-LIANG WU
Keyword(s):  
Phase Transition ◽  
Phase Transitions ◽  
Charged Particle ◽  
Electric Current ◽  
Current Density ◽  
Magnetic Effect ◽  
Chiral Phase ◽  
Particle Correlations ◽  
Chiral Magnetic Effect ◽  
Total Multiplicity

We study the influence of the chiral phase transition on the chiral magnetic effect. The chiral electric current density along the magnetic field, the electric charge difference between on each side of the reaction plane, and the azimuthal charged-particle correlations as functions of the temperature during the QCD phase transitions are calculated. It is found that with the decrease of the temperature, the chiral electric current density, the electric charge difference, and the azimuthal charged-particle correlations all get a sudden suppression at the critical temperature of the chiral phase transition, because the large quark constituent mass in the chiral symmetry broken phase quite suppresses the axial anomaly and the chiral magnetic effect. We suggest that the azimuthal charged-particle correlations (including the correlators divided by the total multiplicity of produced charged particles which are used in current experiments and another kind of correlators not divided by the total multiplicity) can be employed to identify the occurrence of the QCD phase transitions in RHIC energy scan experiments.

scholarly journals Influence of tubular initial conditions on two-particle correlations

2011 ◽  
Vol 38 (12) ◽  
pp. 124123 ◽  
Author(s):  
R P G Andrade ◽  
F Gardim ◽  
F Grassi ◽  
Y Hama ◽  
W L Qian
Keyword(s):  
Initial Conditions ◽  
Particle Correlations

Charged-particle correlations in 600 A · MeV gold induced disassembly reactions, a statistical multifragmentation analysis

1993 ◽  
Vol 561 (3) ◽  
pp. 466-476 ◽  
Author(s):  
H.W. Barz ◽  
W. Bauer ◽  
J.P. Bondorf ◽  
A.S. Botvina ◽  
R. Donangelo ◽  
...  
Keyword(s):  
Charged Particle ◽  
Particle Correlations

scholarly journals Tubular Initial Conditions and Ridge Formation

2013 ◽  
Vol 2013 ◽  
pp. 1-10
Author(s):  
M. S. Borysova ◽  
O. D. Borysov ◽  
Iu. A. Karpenko ◽  
V. M. Shapoval ◽  
Yu. M. Sinyukov
Keyword(s):  
Initial Conditions ◽  
Initial Energy ◽  
Transverse Plane ◽  
Tubular Structures ◽  
Superdense Matter ◽  
Energy Density Distribution ◽  
Particle Correlations ◽  
Initial Energy Density ◽  
Hydrodynamic Evolution ◽  
Angular Interval

The 2D azimuth and rapidity structure of the two-particle correlations in relativistic A+A collisions is altered significantly by the presence of sharp inhomogeneities in superdense matter formed in such processes. The causality constraints enforce one to associate the long-range longitudinal correlations observed in a narrow angular interval, the so-called (soft) ridge, with peculiarities of the initial conditions of collision process. This study's objective is to analyze whether multiform initial tubular structures, undergoing the subsequent hydrodynamic evolution and gradual decoupling, can form the soft ridges. Motivated by the flux-tube scenarios, the initial energy density distribution contains the different numbers of high density tube-like boost-invariant inclusions that form a bumpy structure in the transverse plane. The influence of various structures of such initial conditions in the most central A+A events on the collective evolution of matter, resulting spectra, angular particle correlations andvn-coefficients is studied in the framework of the hydrokinetic model (HKM).

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