Possible mixing of a diquark-antidiquark with a $p \bar p$ hadronic molecule
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arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2024
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| _version_ | 1866909286444040192 |
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| author | Karliner, Marek Rosner, Jonathan L. |
| author_facet | Karliner, Marek Rosner, Jonathan L. |
| contents | We discuss the possibility that the two nearby resonances observed by BESIII partially below the \,$p\bar p$\, threshold might be due to mixing between two metastable states with the same $J^{PC}=0^{-+}$ quantum numbers, but rather different internal structure. One is a $p \bar p$ hadronic molecule and the other a bound state of a light-quark diquark and an antidiquark, both with spin 1 and isospin 0, a composite color antitriplet and triplet, respectively. The doubling of resonances, one of which may be interpreted as a hadronic molecule, while the other arises from $q \bar q$ annihilation in a state with vacuum quantum numbers may be a more general feature than the specific case considered here. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_05920 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Possible mixing of a diquark-antidiquark with a $p \bar p$ hadronic molecule Karliner, Marek Rosner, Jonathan L. High Energy Physics - Phenomenology We discuss the possibility that the two nearby resonances observed by BESIII partially below the \,$p\bar p$\, threshold might be due to mixing between two metastable states with the same $J^{PC}=0^{-+}$ quantum numbers, but rather different internal structure. One is a $p \bar p$ hadronic molecule and the other a bound state of a light-quark diquark and an antidiquark, both with spin 1 and isospin 0, a composite color antitriplet and triplet, respectively. The doubling of resonances, one of which may be interpreted as a hadronic molecule, while the other arises from $q \bar q$ annihilation in a state with vacuum quantum numbers may be a more general feature than the specific case considered here. |
| title | Possible mixing of a diquark-antidiquark with a $p \bar p$ hadronic molecule |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2406.05920 |