Most charming dibaryon near unitarity
| Autor: | Lyu, Yan, Tong, Hui, Sugiura, Takuya, Aoki, Sinya, Doi, Takumi, Hatsuda, Tetsuo, Meng, Jie, Miyamoto, Takaya |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We present a first study on a pair of triply charmed baryons, $\Omega_{ccc}\Omega_{ccc}$ in the $^1S_0$ channel, on the basis of the HAL QCD method. The measurements are perfomed on the $(2+1)$-flavor lattice QCD configurations with nearly physical light-quark masses and physical charm-quark mass. We show that the system with the Coulomb repulsion taking into account the charge form factor of $\Omega_{ccc}$ leads to the scattering length $a^\mathrm{C}_0\simeq-19$ fm and the effective range $r^\mathrm{C}_\mathrm{eff}\simeq0.45$ fm, which indicates $\Omega_{ccc}\Omega_{ccc}$ is located in the unitary regime. Comment: 8 pages, 4 figures, Talk presented at the 38th International Symposium on Lattice Field Theory, LATTICE2021, July, 26th-30th 2021, Zoom/Gather@Massachusetts Institute of Technology |
| Databáze: | arXiv |
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