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| Format: | Preprint |
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2024
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| Accès en ligne: | https://arxiv.org/abs/2402.04185 |
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| _version_ | 1866917740309118976 |
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| author | Pu, Jie Sun, Kai-Jia Ma, Chun-Wang Chen, Lie-Wen |
| author_facet | Pu, Jie Sun, Kai-Jia Ma, Chun-Wang Chen, Lie-Wen |
| contents | The strange dibaryons $pΩ$ ($^5\rm{S}_2$) and $ΩΩ$ ($^1\rm{S}_0$) are likely bound, existing either in molecular states like the deuteron or as more exotic compact six-quark states. Here, we investigate the production of these two dibaryons in Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV at the CERN Large Hadron Collider (LHC) within a covariant coalescence model, which employs a blast-wave-like parametrization for the phase-space configurations of constituent particles at freeze-out. For the molecular states, the $pΩ$ and $ΩΩ$ are produced via $p$-$Ω$ and $Ω$-$Ω$ coalescence, respectively, while for the six-quark states, they are formed through $uudsss$ and $ssssss$ coalescence. We find that the yield ratio $N_{pΩ}/N_Ω$ and $N_{ΩΩ}/N_Ω$ have a distinct centrality dependence between the molecular and multi-quark states, thus offering a promising way for distinguishing the two states. Our results suggest that the measurements of $pΩ$ and $ΩΩ$ production in relativistic heavy-ion collisions can shed light on their internal structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_04185 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing the internal structures of $pΩ$ and $ΩΩ$ with their production at the LHC Pu, Jie Sun, Kai-Jia Ma, Chun-Wang Chen, Lie-Wen High Energy Physics - Phenomenology Nuclear Theory The strange dibaryons $pΩ$ ($^5\rm{S}_2$) and $ΩΩ$ ($^1\rm{S}_0$) are likely bound, existing either in molecular states like the deuteron or as more exotic compact six-quark states. Here, we investigate the production of these two dibaryons in Pb+Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV at the CERN Large Hadron Collider (LHC) within a covariant coalescence model, which employs a blast-wave-like parametrization for the phase-space configurations of constituent particles at freeze-out. For the molecular states, the $pΩ$ and $ΩΩ$ are produced via $p$-$Ω$ and $Ω$-$Ω$ coalescence, respectively, while for the six-quark states, they are formed through $uudsss$ and $ssssss$ coalescence. We find that the yield ratio $N_{pΩ}/N_Ω$ and $N_{ΩΩ}/N_Ω$ have a distinct centrality dependence between the molecular and multi-quark states, thus offering a promising way for distinguishing the two states. Our results suggest that the measurements of $pΩ$ and $ΩΩ$ production in relativistic heavy-ion collisions can shed light on their internal structures. |
| title | Probing the internal structures of $pΩ$ and $ΩΩ$ with their production at the LHC |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2402.04185 |