Low-energy interactions between doubly charmed baryons and Goldstone bosons from lattice QCD
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866908855046242304 |
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| author | Yi, Jing-Yu Liang, Ze-Rui Liu, Liuming Yao, De-Liang |
| author_facet | Yi, Jing-Yu Liang, Ze-Rui Liu, Liuming Yao, De-Liang |
| contents | We perform a lattice QCD calculation of the $S$-wave interactions between the ground-state spin-$1/2$ doubly charmed baryons and Goldstone bosons. The lattice QCD simulations are carried out on four $2+1$ flavor Wilson-Clover ensembles generated by the CLQCD collaboration, with a lattice spacing $a=0.07746$ fm and two different pion masses, $M_π\sim 210$ and $\sim 300~\mathrm{MeV}$. Energy levels are extracted for four single channels, $Ω_{cc}\bar{K}^{(-2,1/2)}$, $Ξ_{cc}K^{(1,1)}$, $Ξ_{cc}K^{(1,0)}$, and $Ξ_{cc}π^{(0,3/2)}$, where the superscripts $(S,I)$ denote strangeness $S$ and isospin $I$. Our results indicate that the $Ξ_{cc}K^{(1,0)}$ channel is attractive, exhibiting negative energy shifts relative to the non-interacting two-hadron thresholds, while the other three channels are repulsive. Using Lüscher's finite-volume formula, we extract the near-threshold phase shifts and determine the $S$-wave scattering lengths. Furthermore, a virtual state pole is found in the $Ξ_{cc}K^{(1,0)}$ scattering amplitude. These results provide {\it ab initio} input to enable high-precision studies of the properties and spectroscopy of doubly heavy baryons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_12611 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Low-energy interactions between doubly charmed baryons and Goldstone bosons from lattice QCD Yi, Jing-Yu Liang, Ze-Rui Liu, Liuming Yao, De-Liang High Energy Physics - Lattice High Energy Physics - Phenomenology We perform a lattice QCD calculation of the $S$-wave interactions between the ground-state spin-$1/2$ doubly charmed baryons and Goldstone bosons. The lattice QCD simulations are carried out on four $2+1$ flavor Wilson-Clover ensembles generated by the CLQCD collaboration, with a lattice spacing $a=0.07746$ fm and two different pion masses, $M_π\sim 210$ and $\sim 300~\mathrm{MeV}$. Energy levels are extracted for four single channels, $Ω_{cc}\bar{K}^{(-2,1/2)}$, $Ξ_{cc}K^{(1,1)}$, $Ξ_{cc}K^{(1,0)}$, and $Ξ_{cc}π^{(0,3/2)}$, where the superscripts $(S,I)$ denote strangeness $S$ and isospin $I$. Our results indicate that the $Ξ_{cc}K^{(1,0)}$ channel is attractive, exhibiting negative energy shifts relative to the non-interacting two-hadron thresholds, while the other three channels are repulsive. Using Lüscher's finite-volume formula, we extract the near-threshold phase shifts and determine the $S$-wave scattering lengths. Furthermore, a virtual state pole is found in the $Ξ_{cc}K^{(1,0)}$ scattering amplitude. These results provide {\it ab initio} input to enable high-precision studies of the properties and spectroscopy of doubly heavy baryons. |
| title | Low-energy interactions between doubly charmed baryons and Goldstone bosons from lattice QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.12611 |