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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2504.18408 |
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| _version_ | 1866917999311585280 |
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| author | Zhang, Yong Ru, Peng |
| author_facet | Zhang, Yong Ru, Peng |
| contents | We study the impacts of the squeezing effect caused by in-medium mass modification on the Hanbury Brown-Twiss (HBT) correlation of $ϕϕ$ using a hydrodynamical source. The squeezing effect reduces the influence of transverse flow on the transverse distribution of $ϕ$ emitting source while expanding the longitudinal source distribution. This trend becomes more noticeable as the transverse momentum increases, resulting in an enlargement of the HBT radii for $ϕϕ$ . Notably, this enlargement is particularly evident with higher transverse pair momentum. As a result, the HBT radii of $ϕϕ$ increase as transverse pair momentum increases instead of showing a consistent crease, showcasing non-flow behavior of HBT radii in hydrodynamical sources. Both Gaussian fitting and Levy fitting support the conclusion. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18408 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Hanbury Brown-Twiss correlation of $ϕϕ$ with in-medium mass modification Zhang, Yong Ru, Peng High Energy Physics - Phenomenology We study the impacts of the squeezing effect caused by in-medium mass modification on the Hanbury Brown-Twiss (HBT) correlation of $ϕϕ$ using a hydrodynamical source. The squeezing effect reduces the influence of transverse flow on the transverse distribution of $ϕ$ emitting source while expanding the longitudinal source distribution. This trend becomes more noticeable as the transverse momentum increases, resulting in an enlargement of the HBT radii for $ϕϕ$ . Notably, this enlargement is particularly evident with higher transverse pair momentum. As a result, the HBT radii of $ϕϕ$ increase as transverse pair momentum increases instead of showing a consistent crease, showcasing non-flow behavior of HBT radii in hydrodynamical sources. Both Gaussian fitting and Levy fitting support the conclusion. |
| title | Hanbury Brown-Twiss correlation of $ϕϕ$ with in-medium mass modification |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.18408 |