scholarly journals Beam energy dependence of pseudorapidity distributions of charged particles produced in relativistic heavy-ion collisions

2016 ◽  
Vol 93 (6) ◽  
Author(s):  
Sumit Basu ◽  
Tapan K. Nayak ◽  
Kaustuv Datta
Keyword(s):  
Energy Dependence ◽  
Beam Energy ◽  
Heavy Ion Collisions ◽  
Charged Particles ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Pseudorapidity Distributions

scholarly journals A Description of Pseudorapidity Distributions of Charged Particles Produced in Au+Au Collisions at RHIC Energies

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Z. J. Jiang ◽  
Dongfang Xu ◽  
Yan Huang
Keyword(s):  
Phase Transition ◽  
Heavy Ion Collisions ◽  
Charged Particles ◽  
Dense Matter ◽  
Heavy Ion ◽  
High Energy ◽  
Low Energy ◽  
Ion Collisions ◽  
Rapidity Distributions ◽  
Pseudorapidity Distributions

In heavy ion collisions, charged particles come from two parts: the hot and dense matter and the leading particles. In this paper, the hot and dense matter is assumed to expand according to the hydrodynamic model including phase transition and decouples into particles via the prescription of Cooper-Frye. The leading particles are as usual supposed to have Gaussian rapidity distributions with the number equaling that of participants. The investigations of this paper show that, unlike low energy situations, the leading particles are essential in describing the pseudorapidity distributions of charged particles produced in high energy heavy ion collisions. This might be due to the different transparencies of nuclei at different energies.

scholarly journals Centrality, transverse momentum and collision energy dependence of the Tsallis parameters in relativistic heavy-ion collisions

2021 ◽  
Vol 136 (6) ◽  
Author(s):  
Rajendra Nath Patra ◽  
Bedangadas Mohanty ◽  
Tapan K. Nayak
Keyword(s):  
Transverse Momentum ◽  
Heavy Ion Collisions ◽  
Collision Energy ◽  
Charged Particles ◽  
Heavy Ion ◽  
High Energy ◽  
Relativistic Heavy Ion Collisions ◽  
Central Collisions ◽  
Ion Collisions ◽  
Tsallis Distribution

AbstractThe thermodynamic properties of matter created in high-energy heavy-ion collisions have been studied in the framework of the non-extensive Tsallis statistics. The transverse momentum ($$p_\mathrm{T}$$ p T ) spectra of identified charged particles (pions, kaons, protons) and all charged particles from the available experimental data of Au-Au collisions at the Relativistic Heavy Ion Collider (RHIC) energies and Pb-Pb collisions at the Large Hadron Collider (LHC) energies are fitted by the Tsallis distribution. The fit parameters, q and T, measure the degree of deviation from an equilibrium state and the effective temperature of the thermalized system, respectively. The $$p_\mathrm{T}$$ p T  spectra are well described by the Tsallis distribution function from peripheral to central collisions for the wide range of collision energies, from $$\sqrt{s_\mathrm{NN}}$$ s NN = 7.7 GeV to 5.02 TeV. The extracted Tsallis parameters are found to be dependent on the particle species, collision energy, centrality, and fitting ranges in $$p_\mathrm{T}$$ p T . For central collisions, both q and T depend strongly on the fit ranges in $$p_\mathrm{T}$$ p T . For most of the collision energies, q remains almost constant as a function of centrality, whereas T increases from peripheral to central collisions. For a given centrality, q systematically increases as a function of collision energy, whereas T has a decreasing trend. A profile plot of q and T with respect to collision energy and centrality shows an anti-correlation between the two parameters.

COLLECTIVE AZIMUTHAL ALIGNMENT IN RELATIVISTIC HEAVY ION REACTIONS

1987 ◽  
Vol 02 (03) ◽  
pp. 163-168 ◽  
Author(s):  
P. BECKMANN ◽  
H.A. GUSTAFSSON ◽  
H.H. GUTBROD ◽  
K.H. KAMPERT ◽  
B. KOLB ◽  
...  
Keyword(s):  
Energy Dependence ◽  
Heavy Ion Collisions ◽  
Center Of Mass ◽  
Charged Particles ◽  
Heavy Ion ◽  
Heavy Ion Reactions ◽  
Ion Collisions ◽  
Forward Hemisphere

The collective azimuthal alignment of charged particles is observed inside of two groups of particles, one emitted to the backward and one emitted to the forward hemisphere in the center of mass of symmetric heavy ion collisions. Whereas for Ca+Ca collisions no effect is observed, the alignment is present for Nb+Nb, and is even more pronounced for Au+Au. There exists also a distinct multiplicity and energy dependence of this collective azimuthal alignment.

scholarly journals Energy dependence of resonance production in relativistic heavy ion collisions

2017 ◽  
Vol 41 (1) ◽  
pp. 014101
Author(s):  
Feng-Lan Shao ◽  
Jun Song ◽  
Rui-Qin Wang ◽  
Mao-Sheng Zhang
Keyword(s):  
Energy Dependence ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Resonance Production ◽  
Ion Collisions
Sign in / Sign up

Export Citation Format

Share Document