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Research PapersNo Access

ENTROPY SCALING IN ION–ION COLLISIONS AT AGS AND SPS ENERGIES

Department of Physics, Aligarh Muslim University, Aligarh 202002, India

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Department of Physics, Aligarh Muslim University, Aligarh 202002, India

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Department of Physics, Aligarh Muslim University, Aligarh 202002, India

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Department of Physics, Aligarh Muslim University, Aligarh 202002, India

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Department of Applied Physics, Aligarh Muslim University, Aligarh 202002, India

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https://doi.org/10.1142/S0218301313500882Cited by:7 (Source: Crossref)

Abstract

Analysis of the experimental data on nucleus–nucleus collisions at AGS and SPS energies reveals that entropy produced in a limited and full phase-space increases with increasing beam energy and mass of the colliding nuclei. The analysis of the data and corresponding mixed event samples, carried out by considering the particles emitted in the forward and backward hemispheres separately, indicates the presence of clusterization and correlations amongst the produced particles. It is also observed that the total entropy produced in a limited pseudorapidity bin, when normalized to the maximum rapidity in the center of mass frame, is essentially independent of projectile and target masses as well as beam energy, indicating thereby presence of a kind of entropy scaling. The observed scaling is also nicely reproduced by the Monte Carlo models, AMPT and FRITIOF. Furthermore, results of the analysis of the mixed events reveal that the observed entropy scaling is a distinguishable feature of the data rather than a manifestation of the statistics.

Keywords:

PACS: 25.75.-q, 25.75.Gz

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References

D. Ghoshet al., J. Phys. G 38, 065105 (2011), DOI: 10.1088/0954-3899/38/6/065105. Web of Science, Google Scholar
M. Rybczynski, J. Phys. G 35, 104091 (2008). Web of Science, Google Scholar
E. V. Shuryak, Phys. Rep. 61, 71 (1980), DOI: 10.1016/0370-1573(80)90105-2. Web of Science, ADS, Google Scholar
S. Pal and S. Pratt, Phys. Lett. B 578, 310 (2004), DOI: 10.1016/j.physletb.2003.10.054. Web of Science, ADS, Google Scholar
F. Karschet al., Nucl. Phys. B 605, 579 (2001), DOI: 10.1016/S0550-3213(01)00200-0. Web of Science, ADS, Google Scholar
F. Karschet al., Nucl. Phys. A 698, 199 (2002), DOI: 10.1016/S0375-9474(01)01365-3. ADS, Google Scholar
A. Bialas and W. Czyz, Phys. Rev. D 61, 074021 (2000), DOI: 10.1103/PhysRevD.61.074021. Web of Science, Google Scholar
A. Bialas and W. Czyz, Acta Phys. Pol. B 31, 687 (2000). Web of Science, ADS, Google Scholar
P. A. Milleret al., Acta Phys. Pol B 29, 3646 (1998). Google Scholar
J. Rafelskiet al., Acta Phys. Pol. B 27, 1037 (1996). Web of Science, Google Scholar
F. Becattini and U. Heinz, Z. Phys. C 76, 269 (1997), DOI: 10.1007/s002880050551. Google Scholar
K. Geiger, Phys. Rev. D 46, 4986 (1992), DOI: 10.1103/PhysRevD.46.4986. Web of Science, ADS, Google Scholar
F. Becattini, Z. Phys. C 69, 485 (1996), DOI: 10.1007/s002880050051. Google Scholar
M. R. Atayanet al., Acta Phys. Pol. B 36, 2969 (2005). Web of Science, Google Scholar
Y. G. Ma, Phys. Rev. Lett. 83, 3617 (1999), DOI: 10.1103/PhysRevLett.83.3617. Web of Science, ADS, Google Scholar
P. Brogueira and J. Dias Deus, Phys. Rev. D 53, 5283 (1996), DOI: 10.1103/PhysRevD.53.5283. Web of Science, ADS, Google Scholar
M. M. Khanet al., Int. J. Mod. Phys. E 21, 1250068 (2012), DOI: 10.1142/S0218301312500681. Link, Google Scholar
D. Ghoshet al., Europhys. Lett. 11, 535 (1990), DOI: 10.1209/0295-5075/11/6/009. ADS, Google Scholar
D. Ghoshet al., Europhys. Lett. 65, 311 (2004), DOI: 10.1209/epl/i2003-10104-5. ADS, Google Scholar
V. Simaket al., Phys. Lett. B 206, 159 (1988). Web of Science, ADS, Google Scholar
M. Reiteret al., Nucl. Phys. A 643, 99 (1988), DOI: 10.1016/S0375-9474(98)00556-9. Web of Science, ADS, Google Scholar
Yu. M. Sinyukov and S. V. Akkelin, Acta Phys. Hung. A 22, 1 (2005), DOI: 10.1556/APH.22.2005.1-2.18. Web of Science, Google Scholar
T. Mizoguchi and M. Biyajima, Europhys. J. C 70, 1061 (2010). Google Scholar
Bo-Nilsson-Almqvist and E. Stenlund, Comput. Phys. Commun. 43, 387 (1987). Web of Science, Google Scholar
Z. W. Linet al., Phys. Rev. C 72, 064901 (2005), DOI: 10.1103/PhysRevC.72.064901. Web of Science, Google Scholar
M. I. Adamovichet al., J. Phys. G 22, 1469 (1996). Web of Science, Google Scholar
Shakeel Ahmadet al., J. Phys. G 30, 1145 (2004). Web of Science, Google Scholar
Shakeel Ahmadet al., Chaos Soliton Fractals 42, 538 (2009). Web of Science, Google Scholar
C. F. Powellet al., The Study of Elementary Particles by Photographic Method (Oxford Pergaman, 1959) p. 450. Google Scholar
M. L. Cherryet al., Acta Phys. Pol. B 29, 2129 (1998). Web of Science, ADS, Google Scholar
M. I. Adamovichet al., Phys. Lett. B 201, 397 (1988), DOI: 10.1016/0370-2693(88)91162-8. Web of Science, ADS, Google Scholar
Shakeel Ahmadet al., Phys. Scripta 87, 045201 (2013). Web of Science, Google Scholar
H. R. Schmidt and J. Schukraft, J. Phys. G 19, 1705 (1993), DOI: 10.1088/0954-3899/19/11/006. Web of Science, ADS, Google Scholar
M. M. Aggarwalet al., Phys. Lett. B 701, 300 (2011), DOI: 10.1016/j.physletb.2011.06.003. Web of Science, ADS, Google Scholar
M. M. Aggarwalet al., Phys. Rev. C 67, 044901 (2003), DOI: 10.1103/PhysRevC.67.044901. Web of Science, Google Scholar
Shakeel Ahmadet al., Int. J. Mod. Phys. E 22, 1350066 (2013). Link, Google Scholar
K. Wozniak, Int. J. Mod. Phys. E 16, 2187 (2007). ADS, Google Scholar
P. Steinberget al., Nucl. Phys. A 774, 631 (2006), DOI: 10.1016/j.nuclphysa.2006.06.102. Web of Science, ADS, Google Scholar
B. Alveret al., Phys. Rev. C 81, 024904 (2010), DOI: 10.1103/PhysRevC.81.024904. Web of Science, Google Scholar
B. Alveret al., Phys. Rev. C 75, 054913 (2007), DOI: 10.1103/PhysRevC.75.054913. Web of Science, Google Scholar
B. I. Abelevet al., Phys. Rev. Lett. 103, 172301 (2009), DOI: 10.1103/PhysRevLett.103.172301. Web of Science, ADS, Google Scholar
V. P. Konchakovskiet al., Phys. Rev. C 79, 034910 (2009), DOI: 10.1103/PhysRevC.79.034910. Web of Science, Google Scholar
M. Skoby, Nucl. Phys. A 854, 113 (2011), DOI: 10.1016/j.nuclphysa.2011.02.001. Web of Science, ADS, Google Scholar
B. K. Srivastaveet al., Int. J. Mod. Phys. E 16, 2210 (2007). ADS, Google Scholar
B. K. Srivastaveet al., Euro. Phys. J. A 31, 862 (2007). Web of Science, ADS, Google Scholar
E. L. Berger, Nucl. Phys. B 75, 61 (1975). Google Scholar
N. Liet al., J. Phys. G 39, 115105 (2012), DOI: 10.1088/0954-3899/39/11/115105. Web of Science, ADS, Google Scholar
B. B. Backet al., Phys. Rev. C 74, 011901 (2006), DOI: 10.1103/PhysRevC.74.011901. Web of Science, Google Scholar
M. I. Adamovichet al., Nucl. Phys. A 593, 535 (1995), DOI: 10.1016/0375-9474(95)00372-8. Web of Science, ADS, Google Scholar
B. Andersonet al., Z. Phys. C 57, 485 (1993). ADS, Google Scholar
G. Singhet al., Phys. Rev. C 39, 1835 (1989), DOI: 10.1103/PhysRevC.39.1835. Web of Science, Google Scholar
N. M. Agababyanet al., Phys. Lett. B 353, 397 (1995), DOI: 10.1016/0370-2693(95)00522-M. Web of Science, ADS, Google Scholar
N. M. Agababyanet al., Phys. Lett. B 332, 458 (1994), DOI: 10.1016/0370-2693(94)91281-5. Web of Science, ADS, Google Scholar

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Vol. 22, No. 12

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History

Received 20 May 2013

Revised 1 November 2013

Accepted 29 November 2013

Published: 18 December 2013

Keywords