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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
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2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2601.10857 |
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| _version_ | 1866908769439449088 |
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| author | Yoo, Jun-sik Ee, June-Haak Park, Sungwoo Gupta, Rajan Bhattacharya, Tanmoy Mondal, Santanu Joó, Bálint Edwards, Robert Orginos, Kostas Winter, Frank |
| author_facet | Yoo, Jun-sik Ee, June-Haak Park, Sungwoo Gupta, Rajan Bhattacharya, Tanmoy Mondal, Santanu Joó, Bálint Edwards, Robert Orginos, Kostas Winter, Frank |
| contents | This paper describes the thirteen ensembles, named NME, generated with 2+1-flavor Wilson-clover fermions by the JLab/W\&M/LANL/MIT/Marseille collaborations, and presents an analysis of the meson and baryon spectrum, decay constants $f_π$ and $f_K$, flow scales $t_0$ and $w_0$, and time histories of the $Θ$ and Weinberg operators under gradient flow. Using these quantities, the physical point values of the two flow scales, ${t_0^{\rm Phy}}$ and ${w_0^{\rm Phy}}$, and the ratio $\mathop{f_K / f_π}^{\rm Phy}$ are determined. The masses of the octet and decuplet baryons are analyzed using both the next-to-leading order (NLO) and the next-next-to-leading order (NNLO) ansatz from heavy baryon chiral perturbation theory (HB$χ$PT). The NNLO fit to the octet baryons, $M_N$, $M_Σ$, $M_Λ$ and $M_Ξ$, is preferred while the corresponding fits to the decuplet Omega mass, $M_Ω$, are not distinguished. We also present a study of the autocorrelations in the data and show that there is no evidence, even at large flow time, of the freezing of the topological charge or the Weinberg three-gluon operator. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_10857 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | The Spectrum and Scale Setting on 2+1-flavor NME Lattices Yoo, Jun-sik Ee, June-Haak Park, Sungwoo Gupta, Rajan Bhattacharya, Tanmoy Mondal, Santanu Joó, Bálint Edwards, Robert Orginos, Kostas Winter, Frank High Energy Physics - Lattice This paper describes the thirteen ensembles, named NME, generated with 2+1-flavor Wilson-clover fermions by the JLab/W\&M/LANL/MIT/Marseille collaborations, and presents an analysis of the meson and baryon spectrum, decay constants $f_π$ and $f_K$, flow scales $t_0$ and $w_0$, and time histories of the $Θ$ and Weinberg operators under gradient flow. Using these quantities, the physical point values of the two flow scales, ${t_0^{\rm Phy}}$ and ${w_0^{\rm Phy}}$, and the ratio $\mathop{f_K / f_π}^{\rm Phy}$ are determined. The masses of the octet and decuplet baryons are analyzed using both the next-to-leading order (NLO) and the next-next-to-leading order (NNLO) ansatz from heavy baryon chiral perturbation theory (HB$χ$PT). The NNLO fit to the octet baryons, $M_N$, $M_Σ$, $M_Λ$ and $M_Ξ$, is preferred while the corresponding fits to the decuplet Omega mass, $M_Ω$, are not distinguished. We also present a study of the autocorrelations in the data and show that there is no evidence, even at large flow time, of the freezing of the topological charge or the Weinberg three-gluon operator. |
| title | The Spectrum and Scale Setting on 2+1-flavor NME Lattices |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2601.10857 |