Octet baryon and heavy meson interactions in chiral effective field theory
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866910738357944320 |
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| author | Huang, Bo-Lin Wang, Bo Zhu, Shi-Lin |
| author_facet | Huang, Bo-Lin Wang, Bo Zhu, Shi-Lin |
| contents | We calculate the effective potentials of the octet baryon and heavy meson systems using the chiral effective field theory up to the next-to-leading order. We consider the contact terms, one-pseudoscalar-meson and two-pseudoscalar-meson exchange contributions, facilitating a comprehensive analysis of the short-, mid-, and long-range interactions in these systems. The low energy constants are correlated with those of the $\bar{N}N$ interaction using a quark-level Lagrangian approach. We also incorporate the decuplet baryon contributions in the loop diagrams. Our research provides new insights into several near-threshold charmed baryons [e.g., $Λ_{c}(2940)$, $Ξ_{c}(3055)$, and $Ω_{c}(3188)$, etc.] around $3$ GeV from the hadronic molecular perspective. We also observe several molecular states, referred to as $Ξ_{c}$, within the mass range of $3100-3500$ MeV. Further measurements of their resonance parameters and decay patterns in experiments may help to discriminate the conventional baryon and hadronic molecule explanations for these near-threshold states. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2402_00460 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Octet baryon and heavy meson interactions in chiral effective field theory Huang, Bo-Lin Wang, Bo Zhu, Shi-Lin High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory We calculate the effective potentials of the octet baryon and heavy meson systems using the chiral effective field theory up to the next-to-leading order. We consider the contact terms, one-pseudoscalar-meson and two-pseudoscalar-meson exchange contributions, facilitating a comprehensive analysis of the short-, mid-, and long-range interactions in these systems. The low energy constants are correlated with those of the $\bar{N}N$ interaction using a quark-level Lagrangian approach. We also incorporate the decuplet baryon contributions in the loop diagrams. Our research provides new insights into several near-threshold charmed baryons [e.g., $Λ_{c}(2940)$, $Ξ_{c}(3055)$, and $Ω_{c}(3188)$, etc.] around $3$ GeV from the hadronic molecular perspective. We also observe several molecular states, referred to as $Ξ_{c}$, within the mass range of $3100-3500$ MeV. Further measurements of their resonance parameters and decay patterns in experiments may help to discriminate the conventional baryon and hadronic molecule explanations for these near-threshold states. |
| title | Octet baryon and heavy meson interactions in chiral effective field theory |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2402.00460 |