Thermal fluctuations on the freeze-out surface of heavy-ion collisions and their impact on particle correlations
Particle momentum distributions originating from a quark-gluon plasma as produced in high-energy nuclear collisions can be influenced by thermal fluctuations in fluid dynamic fields. We study this effect by generalizing the commonly used kinetic freeze-out prescription by allowing for small fluctuat...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
6 July 2023
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| In: |
Physical review
Year: 2023, Volume: 108, Issue: 1, Pages: 1-14 |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.108.014904 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.108.014904 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.108.014904 
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| Author Notes: | Adrian Skasberg Aasen, Stefan Floerchinger, Giuliano Giacalone, Deniz Guenduez |
| Summary: | Particle momentum distributions originating from a quark-gluon plasma as produced in high-energy nuclear collisions can be influenced by thermal fluctuations in fluid dynamic fields. We study this effect by generalizing the commonly used kinetic freeze-out prescription by allowing for small fluctuations around an average in fluid velocity, chemical potentials, and temperature. This leads to the appearance of specific two-body momentum correlations. Combining a blast-wave parametrization of the kinetic freeze-out surface with the thermal correlation functions of an ideal resonance gas, we perform an exploratory study of angular net-charge correlations induced by thermal fluctuations around vanishing chemical potential. We note a diffusion of the near-side peak around Δy=Δϕ=0 induced by variances of different chemical potentials, which could be investigated experimentally. |
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| Item Description: | Gesehen am 02.11.2023 |
| Physical Description: | Online Resource |
| ISSN: | 2469-9993 |
| DOI: | 10.1103/PhysRevC.108.014904 |