Spheroidal expansion and freeze-out geometry of heavy-ion collisions in the few-GeV energy regime
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arXiv
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| Autores principales: | , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2022
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| _version_ | 1866910403931406336 |
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| author | Harabasz, Szymon Kołaś, Jędrzej Ryblewski, Radosław Florkowski, Wojciech Galatyuk, Tetyana Gumberidze, Małgorzata Salabura, Piotr Stroth, Joachim Zbroszczyk, Hanna Paulina |
| author_facet | Harabasz, Szymon Kołaś, Jędrzej Ryblewski, Radosław Florkowski, Wojciech Galatyuk, Tetyana Gumberidze, Małgorzata Salabura, Piotr Stroth, Joachim Zbroszczyk, Hanna Paulina |
| contents | A spheroidal model of the expansion of hadronic matter produced in heavy-ion collisions in the few-GeV energy regime is proposed. It constitutes an extension of the spherically symmetric Siemens-Rasmussen blast-wave model used in our previous works. The spheroidal form of the expansion, combined with a single-freeze-out scenario, allows for a significantly improved description of both the transverse-mass and the rapidity distributions of the produced particles. With the model parameters determined by the hadronic abundances and spectra, we make further predictions of the pion HBT correlation radii that turn out to be in a qualitative agreement with the measured ones. The overall successful description of the data supports the concept of spheroidal symmetry of the produced hadronic systems in this energy range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_07694 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Spheroidal expansion and freeze-out geometry of heavy-ion collisions in the few-GeV energy regime Harabasz, Szymon Kołaś, Jędrzej Ryblewski, Radosław Florkowski, Wojciech Galatyuk, Tetyana Gumberidze, Małgorzata Salabura, Piotr Stroth, Joachim Zbroszczyk, Hanna Paulina Nuclear Theory A spheroidal model of the expansion of hadronic matter produced in heavy-ion collisions in the few-GeV energy regime is proposed. It constitutes an extension of the spherically symmetric Siemens-Rasmussen blast-wave model used in our previous works. The spheroidal form of the expansion, combined with a single-freeze-out scenario, allows for a significantly improved description of both the transverse-mass and the rapidity distributions of the produced particles. With the model parameters determined by the hadronic abundances and spectra, we make further predictions of the pion HBT correlation radii that turn out to be in a qualitative agreement with the measured ones. The overall successful description of the data supports the concept of spheroidal symmetry of the produced hadronic systems in this energy range. |
| title | Spheroidal expansion and freeze-out geometry of heavy-ion collisions in the few-GeV energy regime |
| topic | Nuclear Theory |
| url | https://arxiv.org/abs/2210.07694 |