Journal Article

GSI-2024-00340

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Space–Time Structure of Particle Emission and Femtoscopy Scales in Ultrarelativistic Heavy-Ion Collisions

Sinyukov, Y. M. ; Shapoval, V. ; Adzhymambetov, M. (Corresponding author)

2023
MDPI Basel

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Please use a persistent id in citations: doi:10.3390/universe9100433  doi:10.15120/GSI-2024-00340

Report No.: arXiv:2310.16233

Abstract: The analysis of the spatiotemporal picture of particle radiation in relativistic heavy-ion collisions in terms of correlation femtoscopy scales, emission, and source functions allows one to probe the character of the evolution of the system created in the collision. Realistic models, such as the integrated hydrokinetic model (iHKM), used in the present work, are able to simulate the entire evolution process of strongly interacting matter produced in high-energy nuclear collisions. The mentioned model describes all the stages of the system’s evolution, including thermalisation and hydrodynamisation, which can help researchers figure out the specific details of the process and better understand the formation mechanisms of certain observables. In the current paper, we investigated the behaviour of the pion and kaon interferometry radii and their connection with emission functions in ultrarelativistic heavy-ion collisions at the Large Hadron Collider within iHKM. We focused on the study of the emission time scales at different energies for both particle species (pions and kaons) aiming to gain deeper insight into relation of these scales and the peculiarities of the mentioned system’s collective expansion and decay with the experimentally observed femtoscopy radii. One of our main interests was the problem of the total system’s lifetime estimation based on the femtoscopy analysis.

Keyword(s): heavy ion: scattering ; matter: interaction ; space-time ; collective ; interferometer ; interpretation of experiments: CERN LHC Coll ; formation ; correlation ; lifetime ; nucleus ; structure ; numerical calculations ; kaon ; pion ; femtoscopy radius ; emission function ; emission time ; particlisation

Note: 28 pages, 9 figures. 'Author edition' of the recently published articleThe research was carried out within the NAS of the Ukraine Targeted Research Program “Collaboration in advanced international projects on high-energy physics and nuclear physics”, Agreement No. 7/2023 between the NAS of Ukraine and BITP of the NAS of Ukraine. The work was also supported by a grant from the Simons Foundation (Grant Number 1039151, Y.S., V.S., and M.A.). The author Yu.S. is supported by the Excellence Initiative Research University grant of the Warsaw University of Technology.Y.S. is also grateful to the ExtreMe Matter Institute (EMMI) at GSI in Darmstadt, where he was affiliated at the beginning of the work on the current paper, and to Hanna Zbroszczyk for her invitation to continue these studies in Warsaw University of Technology (WUT) as the Visiting Professor. "This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/)."

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Contributing Institute(s):

1. ExtreMe Matter Institute, EMMI (EXM)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)

Experiment(s):

1. no experiment theory work (theory)

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Web of Science Core Collection

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