Measurements of $p-Λ$ and $d-Λ$ correlations in 3 GeV Au+Au collisions at STAR
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arXiv
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| Format: | Preprint |
| Publié: |
2023
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| _version_ | 1866910285104676864 |
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| author | Hu, Yu |
| author_facet | Hu, Yu |
| contents | Heavy-ion collisions provide a unique opportunity to explore nucleon-hyperon (N-Y) interactions through two-particle correlations. The $p-Λ$ and $d-Λ$ correlations shed light on both N-Y two-body and N-N-Y three-body interactions, which is crucial for understanding neutron star properties. We present the high precision measurement of $p-Λ$ and the first measurement of $d-Λ$ correlation with $\sqrt{s_{_{\rm NN}}}=$ 3 GeV Au+Au collisions at STAR. Using the Lednicky-Lyuboshitz formalism, we characterized emission source size, the scattering length ($f_0$), and the effective range ($d_0$) of $p-Λ$ and $d-Λ$ interactions. Using the $f_0$ and $d_0$ extracted from two spin states in $d-Λ$ correlation, the parameters from the doublet state indicate the hypertriton binding energy is consistent with the current average of world measurements. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_00319 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Measurements of $p-Λ$ and $d-Λ$ correlations in 3 GeV Au+Au collisions at STAR Hu, Yu Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory Heavy-ion collisions provide a unique opportunity to explore nucleon-hyperon (N-Y) interactions through two-particle correlations. The $p-Λ$ and $d-Λ$ correlations shed light on both N-Y two-body and N-N-Y three-body interactions, which is crucial for understanding neutron star properties. We present the high precision measurement of $p-Λ$ and the first measurement of $d-Λ$ correlation with $\sqrt{s_{_{\rm NN}}}=$ 3 GeV Au+Au collisions at STAR. Using the Lednicky-Lyuboshitz formalism, we characterized emission source size, the scattering length ($f_0$), and the effective range ($d_0$) of $p-Λ$ and $d-Λ$ interactions. Using the $f_0$ and $d_0$ extracted from two spin states in $d-Λ$ correlation, the parameters from the doublet state indicate the hypertriton binding energy is consistent with the current average of world measurements. |
| title | Measurements of $p-Λ$ and $d-Λ$ correlations in 3 GeV Au+Au collisions at STAR |
| topic | Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2401.00319 |