Entropy Analysis in Relativistic Heavy-Ion Collisions

Ahmad, Shakeel; Ahmad, A.; Chandra, Anuj; Zafar, M.; Irfan, M.

doi:10.1155/2013/836071

Entropy Analysis in Relativistic Heavy-Ion Collisions

2013

10 pages

Published in:

Adv.High Energy Phys. 2013 (2013) 836071

Published: 2013

DOI:

10.1155/2013/836071

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Abstract:

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 of entropy 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.

25.75.-q
25.75.Gz
heavy ion: scattering
correlation: short-range
entropy
Brookhaven PS
CERN SPS
Monte Carlo
phase space
rapidity

References(46)

Figures(0)

[1]

Energy dependence of fluctuations in central Pb + Pb collisions from NA49 at the CERN SPS

M. Rybezynski

[2]

Quantum chromodynamics and the theory of superdense matter

E.V. Shuryak

- Phys.Rept.C 61 (1980) 71-158

[3]

Rapidity dependence of multiplicity fluctuations and correlations in high-energy nucleus-nucleus interactions

Dipak Ghosh
(
- Jadavpur U.
)
,
Argha Deb
(
- Jadavpur U.
)
,
Swarnapratim Bhattacharyya
(
- New Alipore Coll.
)
,
Utpal Datta
(
- Jadavpur U.
)

- Pramana 77 (2011) 297-313
•
DOI:
- 10.1007/s12043-011-0131-2

[4]

Event by event analysis and entropy of multiparticle systems

A. Bialas
,
W. Czyz

[5]

Measurement of entropy of a multiparticle system: a do-list

A. Bialas
,
W. Czyz

[6]

Renyi entropies are calculated for some multiparticle systems

A. Bialas
,
W. Czyz

[7]

Renyi entropies for bernoulli distributions

A. Bialas
,
W. Czyz

[8]

Quantum chaos: entropy signatures

P.A. Miller
,
S. Sarkar
,
R. Zarum

[9]

Entropy analysis in 𝜋 + 𝑝 and 𝐾 + 𝑝 collisions at √𝑠 = 22 GeV

M.R. Atayan
,
B. Yuting
,
E.A. de Wolf

[10]

Studying thermodynamics in heavy ion collisions

A. Bialas
,
W. Czyz
,
J. Wosiek

[11]

Entropy in hadron-hadron collisions

K. Fialkowski
,
R. Wit

[12]

Renyi entropies in particle cascades

A. Bialas
,
W. Czyz
,
A. Ostruszka

[13]

Statistical Mechanics

S.K. Ma

[14]

Calculation of entropy from data of motion

S.K. Ma

- J.Statist.Phys. 26 (1986) 221-240

[15]

Entropy of a spin-glass model with long-range interaction

S.K. Ma
,
M. Payne

[16]

Entropy in multiparticle production and ultimate multiplicity scaling

V. Simak
,
M. Šumbera
,
I. Zborovský

[17]

Analyses of multiplicity distributions with 𝜂𝑐 and Bose-Einstein correlations at LHC by means of generalized Glauber-Lachs formula

T. Mizoguchi
,
M. Biajima

[18]

Multiplicity characteristics of symmetric and asymmetric heavy ion interactions at 4.5-A/GeV/c

et al.

- EPL 11 (1990) 535-540
•
DOI:
- 10.1209/0295-5075/11/6/009

[19]

Validity of the negative binomial multiplicity distribution in case of ultra-relativistic nucleus nucleus interaction in different azimuthal bins

- EPL 65 (2004) 311-315
•
DOI:
- 10.1209/epl/i2003-10104-5

[20]

Entropy scaling in high-energy nucleus-nucleus interactions

D. Ghosh
,
A. Deb
,
S. Bhattacharyya

[21]

Evidence of entropy scaling in relativistic nucleus-nucleus collisions

M.M. Khan
,
N. Ahmad
,
M.D. Azmi

[22]

Entropy and composite particle production

G.F. Bertsch

[23]

EVIDENCE FOR A SOFT NUCLEAR MATTER EQUATION OF STATE

P.J. Siemens
(
- LBL, Berkeley
)
,
Joseph I. Kapusta
(
- LBL, Berkeley
)

- Phys.Rev.Lett. 43 (1979) 1486-1489
•
DOI:
- 10.1103/PhysRevLett.43.1486

[24]

Entropy production at RHIC

S. Pal
,
S. Pratt

[25]

Produced particle multiplicity dependence on centrality in nucleus—nucleus collisions

M.I. Adamovich
,
M.M. Aggarwal
,
Y.A. Alexandrov

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