The Characteristics of Pseudorapidity Distributions of Shower Particles Emitted in Interactions of Nuclei with Nuclear Emulsion at 4.5 A GeV/c
Rapidity variable
Keywords:
Heavy-ion collisions, hadronic phase, nuclear emulsion, pseudorapidity, quark-gluonAbstract
The present study is based on the interactions caused by silicon nuclei with emulsion nuclei at 4.5 A GeV/c. The main aim is to study the characteristics of pseudorapidity distributions of shower particles emitted in the interactions. The pseudorapidity distributions of shower particles produced in the interactions was well fitted to the Gaussian distribution. The dependence of the pseudorapidity distributions on the projectile mass have been studied. Also, the dependence of the distributions on the target nuclei (AgBr and CNO) has been studied. The variations of the average of pseudorapidity with the average of shower multiplicity have been investigated. The energy density resulting from the interaction was estimated according to the Bjorken model. It was an insufficient energy density for the phase transition to the QGP state to occur.
References
G.Singh, K.Sengupta and P. L. Jain, “Multiplicity Distributions in Pseudorapidity Intervals with 32S at 200 GeV/nucleon and 16O at 200 and 60 GeV/nucleon”, Phys. Rev. Lett. 61, 1073–1076, 1988.
B.Abelev, J.Adam, D.Adamová, A.Adare, M.Aggarwal, G.A.Rinella, A.Agocs, A.Agostinelli, S.A.Salazar and Z. Ahammed, “Centrality dependence of charged particle production at large transverse momentum in Pb–Pb collisions at sNN = 2.76 TeV”, Phys. Lett. B, 720, 52–62, 2013.
J.Adams, M.M.Aggarwal, Z.Ahammed, J.Amonett, B.D.Anderson, D.Arkhipkin, G.S.Averichev, S.K.Badyal, Y.Bai and J.Balewski, “Experimental and theoretical challenges in the search for the quark-gluon plasma: The STAR Collaboration’s critical assessment of the evidence from RHIC collisions”, Nucl. Phys. A, 757, 102–183, 2005.
K.K. Olimov, F.H.Liu, K.A. Musaev, A.K. Olimov, B.J. Tukhtaev, N.S. Saidkhanov, B.S. Yuldashev, K. Olimov and K.G.Gulamov, “Particle species and collision energy dependencies of the midrapidity average transverse momenta of identified charged particles in Au + Au and Pb+Pb collisions in (Snn)1/2 = 62-5020 GeV energy range at RHIC and LHC”. Int. J. Mod. Phys. E, 30, 2150029, 2021.
B.Cabodevila, S. Salgado and C.Wu, “Quark production and thermalization of the quark-gluon plasma”, High Energy Phys. 2024, 145, 2024.
H.Mantysaari, B.Schenke, C.Shen and W. Zhao, “Collision-Energy Dependence in Heavy-Ion Collisions from Nonlinear QCD Evolution”, Phys. Rev. Lett. , 135, 022302, 2025.
N.Burtebayev, A.Fedosimova, I.Lebedev, E.Dmitriyeva, S.Ibraimova, E.Bondar, “Fluctuations of Initial State and Event-by-Event Pseudo-Rapidity Correlations in High Energy Nuclear Collisions”. Universe, 8, 67, 2022.
T.Ablyazimov, A.Abuhoza, R.P.Adak, M.Adamczyk, K.Agarwal, M.M.Aggarwal, Z.Ahammed, F.Ahmad, N.Ahmad, and S.Ahmad, “Challenges in QCD matter physics, the scientific programme of the Compressed Baryonic Matter experiment at FAIR”. Eur. Phys. J. A, 53, 60, 2017.
K.A.Bugaev, A.I.Ivanytskyi, D.R.Oliinychenko, V.Sagun, I.N.Mishustin, D.H.Rischke, L.M.Satarov and G.M.Zinovjev, “Thermodynamically anomalous regions and possible new signals of mixed-phase formation”, Eur. Phys. J. A, 52, 175, 2016.
L.Adamczyk, J.K.Adkins, G.Agakishiev, M.M.Aggarwal, Z.Ahammed, N.N.Ajitanand, I.Alekseev, D.M.Anderson, R.Aoyama and A.Aparin, “Bulk properties of the medium produced in relativistic heavy-ion collisions from the beam energy scan program”. Phys. Rev. C, 96, 044904, 2017.
JH.Chen, X.Dong and H.XH, “Properties of the QCD matter: review of selected results from the relativistic heavy ion collider beam energy”, NUCL SCI TECH 35, 214, 2024.
T.Ahmad and N.Ahmad, “Study of Pseudo-Central Collision Events Observed in Pion-Nucleus Interactions”, J. Korean Phys. Soc., 77, 107–110, 2020.
M.Zdzicki, M.Gorenstein and S. Mrowczynski, “Fluctuations and deconfinement phase transition in nucleus–nucleus collisions”, Phys. Lett. B, 585, 115–121, 2004.
JQ.Tao, HB.He and H. Zheng, “Pseudo-rapidity distributions of charged particles in asymmetric collisions using Tsallis thermodynamics”. Nucl sci tech 34, 172, 2023.
C.Y.Wong, “Introduction to High-Energy Heavy Ion Collisions”, World Scientific, Singapore, 1994.
N.M.Hassan, N.M.Sadek, J.Elsweedy and M.T.Hussein, “Energy- angular correlation of medium energy particles produced in heavy Ion collisions”, International Journal of Physical Sciences, 1, 17-22, 2006.
Fu.Hu Liu and Jun.Fen Sun, “Pseudorapidity distribution of shower particles in neutrino-emulsion collisions at high energy”, Canadian Journal of Physics, 77, 77-83, 1999.
A.Dabrowska, B.Wosiek and C.J.Waddington, “Energy Dependence of the Fragmentation of the Au Projectile in Au-Emulsion Interactions”, Acta Phys. B31, 725, 2000.
M.Abdusalam, T.Ahmad and M. Irfan, “Characteristics of Relativistic Particles Produced in 4.5 A GeV/c Silicon-Emulsion Interactions”, Journal of the Physical Society of Japan, 63, 2936 – 2941, 1994.
J. D.Bjorken, “highly relativistic nucleus – nucleus collisions: The central rapidity region”, Phys. Rev. D. 27, 140, 1983.
M.El-Nadi, O.Badawy, N.Mettwalli, A.Hussien, E.Shaat, A. Abou-Moussa, Z. El-Wahid and F. A., Riad, “Multiplicity and rapidity density in central collisions of 4.1 A GeVc-1 22Ne nuclei in nuclear emulsions”, journal of Physics G: Nuclear and Particle Physics, 19, 2027, 1993.
S.Fakhraddin, “Study of Pseudorapidity Distributions of Shower Particles Emitted in Interactions of Nuclei with Emulsion”, Turk J Phys 29, 79 – 84, 2005.
B. Singh and K. Tuli, “Central collisions of 28Si with AgBr nuclei”, Nucl. Phys, A602, 487-501, 1996.
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Copyright (c) 2025 Salima Saleh Abuazoum، Mustafa Abdelsalam BenNaser، Fatma Abdelsalam Abuzgia، Halema Alhadi Aljamel
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