Journal
PHYSICA SCRIPTA
Volume 96, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/ac0c55
Keywords
Correlation femtoscopy; Relativistic heavy-ion collisions; Particle emission; HBT intensity interferometry
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Funding
- Norwegian Centre for International Cooperation in Education (SIU) [CPEA-LT-2016/10094, UTF-2016-longterm/10076]
- Norwegian Research Council (NFR) [255 253/F50]
- Russian Foundation for Basic Research (RFBR) [18-02-40084, 18-02-40085]
- NAS of Ukraine priority project Fundamental properties of the matter in the relativistic collisions of nuclei and in the early Universe [0120U100935]
- Tomsk State University Competitiveness Improvement Program
- Ministry of Science and Higher Education of the Russian Federation, Project 'Fundamental properties of elementary particles and cosmology' [0723-2020-0041]
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The spatial and temporal properties of pion emission were investigated in 0%-5% central Au+Au collisions at three different energies using the UrQMD model. Three-dimensional femtoscopic radii and times of maximum emission were extracted and found to provide consistent results at the considered energies.
The spatial and temporal properties of pion emission in 0%-5% central Au+Au collisions at root S-NN = 11.5, 14.5 GeV, and 19.6 GeV were investigated using the UrQMD model. The three-dimensional femtoscopic radii, R-out, R-side, and R-long, were extracted for several regions of pair transverse momentum. Times of maximum emission, tau(m.e.), were extracted from the fit to R-long with the assumptions of the absence and presence of the transverse flow and compared to each other. In addition, the tau(m.e.) was estimated directly fromthe single-particle emission function at kinetic freeze-out. The two methods provide consistent results at the considered energies.
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