Molecular pentaquarks composed of a ground octet baryon and a $P-$wave anti-charmed meson
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| Main Authors: | , , |
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| Format: | Preprint |
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2026
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| _version_ | 1866909994139516928 |
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| author | Cui, Yu-Yue Chen, Rui Huang, Qi |
| author_facet | Cui, Yu-Yue Chen, Rui Huang, Qi |
| contents | In this work, we investigate the interactions between an excited anti-charm meson doublet $(\bar{D}_1, \bar{D}_2^*)$ and ground-state octet baryons $(N, Λ, Σ, Ξ)$ with the aim of identifying possible molecular pentaquark states. A systematic analysis is performed within the one-boson-exchange model, which incorporates both $S$-wave and $P$-wave interactions, $S$-$D$ wave mixing, and coupled-channel effects. By solving the Schrödinger equations, we can predict a rich spectrum of loosely bound anti-charm molecular pentaquarks with strangeness $|S| = 0, 1, 2$. Our results provide specific quantum number assignments and mass range predictions to guide future experimental searches at facilities such as LHCb and Belle II. The discovery of such states would significantly enrich the hadron spectrum and serve as a critical test of theoretical models for hadronic interactions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_12320 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Molecular pentaquarks composed of a ground octet baryon and a $P-$wave anti-charmed meson Cui, Yu-Yue Chen, Rui Huang, Qi High Energy Physics - Phenomenology In this work, we investigate the interactions between an excited anti-charm meson doublet $(\bar{D}_1, \bar{D}_2^*)$ and ground-state octet baryons $(N, Λ, Σ, Ξ)$ with the aim of identifying possible molecular pentaquark states. A systematic analysis is performed within the one-boson-exchange model, which incorporates both $S$-wave and $P$-wave interactions, $S$-$D$ wave mixing, and coupled-channel effects. By solving the Schrödinger equations, we can predict a rich spectrum of loosely bound anti-charm molecular pentaquarks with strangeness $|S| = 0, 1, 2$. Our results provide specific quantum number assignments and mass range predictions to guide future experimental searches at facilities such as LHCb and Belle II. The discovery of such states would significantly enrich the hadron spectrum and serve as a critical test of theoretical models for hadronic interactions. |
| title | Molecular pentaquarks composed of a ground octet baryon and a $P-$wave anti-charmed meson |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2601.12320 |