Event-by-event analysis of maximum pseudo-rapidity gap fluctuation in high-energy nucleus-nucleus collisions

被引：8

作者：

Bhattacharyya, Swarnapratim ^{[1
]}

Haiduc, Maria ^{[2
]}

Neagu, Alina Tania ^{[2
]}

Firu, Elena ^{[2
]}

机构：

[1] New Alipore Coll, Dept Phys, L Block, Kolkata 700053, India

[2] Inst Space Sci, Bucharest, Romania

来源：

EPL | 2019年 / 126卷 / 04期

关键词：

HEAVY-ION COLLISIONS; TRANSVERSE-MOMENTUM; CHEMICAL FLUCTUATIONS; EQUILIBRATION; DENSITY;

D O I：

10.1209/0295-5075/126/42001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A detailed study of event-by-event maximum pseudo-rapidity gap fluctuations in relativistic heavy-ion collisions in terms of the scaled variance has been carried out for O-16-AgBr, Si-28-AgBr and S-32-AgBr interactions at an incident momentum of 4.5 AGeV/c applying the multiplicity cut (N-s > 10). For all the interactions the values of scaled variance are found to be greater than zero indicating the presence of strong fluctuation of maximum pseudo-rapidity gap values in the multiparticle production process. The event-by-event fluctuations are found to decrease with the increase of average multiplicity of the interactions. Experimental analysis has been compared with the results obtained from the analysis of events simulated by the Ultra Relativistic Quantum Molecular Dynamics (UrQMD) model. The UrQMD-model simulated values of event-by-event fluctuations of the maximum pseudo-rapidity gap are less than the corresponding experimental values. Copyright (C) EPLA, 2019

引用

页数：6

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