Structure of the $Ω^{-}(2012)$ with Hamiltonian Effective Field Theory
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915526973849600 |
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| author | Han, Fang-Chao Liu, Zhan-Wei Leinweber, Derek B. Thomas, Anthony W. |
| author_facet | Han, Fang-Chao Liu, Zhan-Wei Leinweber, Derek B. Thomas, Anthony W. |
| contents | We investigate the internal structure of the $Ω(2012)^-$ by analyzing lattice QCD simulation and experimental data within Hamiltonian effective field theory, considering both $J^P = 1/2^-$ and $3/2^-$ assignments. The couplings to the dominant decay channel $Ξ\bar{K}$ and the near-threshold channel $Ξ(1530) \bar{K}$ are determined through the quark-pair-creation model. By studying the lattice QCD spectra in these two spin-parity scenarios, we extract the masses and widths of the resonances. We notice that the $J^P = 3/2^-$ resonance is consistent with the observed $Ω(2012)^-$ while the recently reported $Ω(2109)^-$ may be a $J^P = 1/2^-$ $Ω$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_06682 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Structure of the $Ω^{-}(2012)$ with Hamiltonian Effective Field Theory Han, Fang-Chao Liu, Zhan-Wei Leinweber, Derek B. Thomas, Anthony W. High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice We investigate the internal structure of the $Ω(2012)^-$ by analyzing lattice QCD simulation and experimental data within Hamiltonian effective field theory, considering both $J^P = 1/2^-$ and $3/2^-$ assignments. The couplings to the dominant decay channel $Ξ\bar{K}$ and the near-threshold channel $Ξ(1530) \bar{K}$ are determined through the quark-pair-creation model. By studying the lattice QCD spectra in these two spin-parity scenarios, we extract the masses and widths of the resonances. We notice that the $J^P = 3/2^-$ resonance is consistent with the observed $Ω(2012)^-$ while the recently reported $Ω(2109)^-$ may be a $J^P = 1/2^-$ $Ω$. |
| title | Structure of the $Ω^{-}(2012)$ with Hamiltonian Effective Field Theory |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2507.06682 |