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Wavelet transform-based multi-scale analysis of ring-like and jet-like events in relativistic heavy-ion collisions

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Abstract

We use wavelet transform-based multi-scale analysis to identify localized structures in pseudorapidity space in high-energy nuclear collisions of \(^{16}\)O–Ag/Br and \(^{32}\)S–Ag/Br at 60A GeV and 200A GeV, respectively. Our analysis specifically focuses on ring-like and jet-like events and incorporate simulation models such as FRITIOF, UrQMD, and AMPT. Comparing experimental and simulated data, it is evidently found that the data obtained through different models reproduce the coarse features of the high-energy experiments but with minute differences. The absence of certain irregularities in the simulated data may be due to higher statistics in the simulations resulting in smoother distributions. We also observed distinct differences between experimentally observed ring-like and jet-like events, confirming their different origins. Our findings suggest that this approach is one of the most promising way to investigate the complex dynamics of high-energy nuclear collisions.

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Data Availability Statement

This manuscript has associated data in a data repository. [Authors’ comment: In this paper, the simulated data have been generated using the FRITIOF model, the UrQMD model, and AMPT model simulation method. All data generated or analyzed during this study are included in this article. The experimental data used in the present study were published by EPL [42, 62] and is available at, https://doi.org/10.1209/0295-5075/80/22003, and https://doi.org/10.1209/epl/i2003-10104-5.]

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Acknowledgements

The authors are grateful to Prof. P. L. Jain, State University of Buffalo, Buffalo, NY, US, for providing the exposed and developed emulsion plates used for this analysis. One of the authors, P. K. Haldar, gratefully acknowledges his joint supervisor and expresses the utmost thanks to emeritus Prof. D. Ghosh and Prof. Argha Deb of Jadavpur University in Kolkata, India, for all kind of supports.

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  1. Department of Physics, Cooch Behar Panchanan Barma University, Vivekananda Street, Cooch Behar, West Bengal, 736101, India

    Nirpat Subba & Prabir Kumar Haldar

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  1. Nirpat Subba
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  2. Prabir Kumar Haldar
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Correspondence to Prabir Kumar Haldar.

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Subba, N., Haldar, P.K. Wavelet transform-based multi-scale analysis of ring-like and jet-like events in relativistic heavy-ion collisions. Eur. Phys. J. Plus 138, 1128 (2023). https://doi.org/10.1140/epjp/s13360-023-04757-w

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