Entropy Analysis in Relativistic Heavy-Ion Collisions | Zendy

Shakeel Ahmad | Zendy; Arshad Ahmad | Zendy; Anuj Chandra | Zendy; M. Zafar | Zendy; M. Irfan | Zendy

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Entropy Analysis in Relativistic Heavy-Ion Collisions

Author(s) -

Shakeel Ahmad,

Arshad Ahmad,

Anuj Chandra,

M. Zafar,

M. Irfan

Publication year - 2013

Publication title -

advances in high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.59

H-Index - 49

eISSN - 1687-7365

pISSN - 1687-7357

DOI - 10.1155/2013/836071

Subject(s) - pseudorapidity , rapidity , physics , bin , scaling , phase space , monte carlo method , heavy ion , nuclear physics , principle of maximum entropy , statistical physics , entropy (arrow of time) , ion , range (aeronautics) , charged particle , computational physics , atomic physics , hadron , thermodynamics , statistics , quantum mechanics , geometry , mathematics , materials science , algorithm , computer science , composite material

Entropy creation in multiparticle system is investigated by analysing the experimental data on ion-ion collisions at AGS and SPS energies and the results thus obtained are compared with those predicted by multiphase transport and correlation-free Monte Carlo models. Entropies produced in limited- and full-phase space are observed to increase with increasing beam energy. The entropy values, normalized to the maximum rapidity and plotted against pseudorapidity (bin width also normalized to the maximum rapidity), are found to be energy independent, exhibiting a kind ofentropy scaling. Such scaling is observed in the full phase space as well as in the regions confined to the forward or backward hemispheres. The findings also reveal that there exist strong correlations amongst the particles produced in the forward and backward hemispheres around the midrapidity. These correlations are found to be of short range in nature, and the contributions from the long-range correlations seem to be absent. PACS numbers: 25.75-q, 25.75.Gz

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