Charged particle density distributions in Au + Au collisions at relativistic heavy-ion collider energies

Pramana ◽  
2003 ◽  
Vol 60 (5) ◽  
pp. 1095-1098 ◽  
Author(s):  
Fouad Rami ◽  
1995 ◽  
Vol 352 (3-4) ◽  
pp. 472-478 ◽  
Author(s):  
M.I. Adamovich ◽  
M.M. Aggarwal ◽  
Y.A. Alexandrov ◽  
R. Amirikas ◽  
N.P. Andreeva ◽  
...  

Author(s):  
Normunds Kante ◽  
Juris Lavedels ◽  
N. Kriščuks

In this article a method of obtaining an experiment plan in a fragment of multidimensional space is analyzed and improved. The method is based on an assumption that particles will distribute evenly in an infinite space with constant charged particle density. To obtain the experiment plan, the infinite multidimensional space is replaced with a hypercube whose surface models influence of the surrounding infinite space. Software is developed and practical results in obtaining experiment plan in two-dimensional space are acquired. Two-dimensional space allows developing of a methodology and algorithm for obtaining experiment plan while providing a simple visualization of the solution. Acquired results in two-dimensional space give an opportunity to create methods for obtaining experiment plan in a hypercube of multidimensional space.


2014 ◽  
Vol 23 (04) ◽  
pp. 1450024 ◽  
Author(s):  
Raghunath Sahoo ◽  
Aditya Nath Mishra

We study the charged particle and transverse energy production mechanism from AGS, SPS, Relativistic Heavy-Ion Collider (RHIC) to Large Hadron Collider (LHC) energies in the framework of nucleon and quark participants. At RHIC and LHC energies, the number of nucleons-normalized charged particle and transverse energy density in pseudorapidity, which shows a monotonic rise with centrality, turns out to be an almost centrality independent scaling behavior when normalized to the number of participant quarks. A universal function which is a combination of logarithmic and power-law, describes well the charged particle and transverse energy production both at nucleon and quark participant level for the whole range of collision energies. Energy dependent production mechanisms are discussed both for nucleonic and partonic level. Predictions are made for the pseudorapidity densities of transverse energy, charged particle multiplicity and their ratio (the barometric observable, [Formula: see text]) at mid-rapidity for Pb + Pb collisions at [Formula: see text]. A comparison with models based on gluon saturation and statistical hadron gas is made for the energy dependence of [Formula: see text].


Fractals ◽  
2012 ◽  
Vol 20 (03n04) ◽  
pp. 203-215 ◽  
Author(s):  
P. MALI ◽  
A. MUKHOPADHYAY ◽  
G. SINGH

The multifractal structure of one dimensional charged particle density distribution in 28 Si-Ag / Br interactions at 14.5 GeV per nucleon is investigated by using two different techniques. The experimental measurements are compared with a microscopic transport model of particle production based on the Ultra-relativistic Quantum Molecular Dynamics (UrQMD). Various parameters related to multifractality, for example the Lévy's index, are obtained. Our analysis shows that multifractal structure is present both in the experiment as well as in the simulation. As far as the self-similar nature of the density fluctuation is concerned, there exists, however, a small but definite quantitative difference between the two.


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