High-Precision Scale Setting with the Omega-Baryon Mass and Gradient Flow
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| Formato: | Preprint |
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2025
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| author | Bazavov, Alexei Bernard, Claude W. Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Heller, Urs M. Hostetler, Leon Jay, William I. Jeong, Hwancheol Kronfeld, Andreas S. Lin, Yin Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Meyer, Aaron S. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro Wagman, Michael L. |
| author_facet | Bazavov, Alexei Bernard, Claude W. Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Heller, Urs M. Hostetler, Leon Jay, William I. Jeong, Hwancheol Kronfeld, Andreas S. Lin, Yin Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Meyer, Aaron S. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro Wagman, Michael L. |
| contents | The gradient-flow scale $w_0$ in lattice QCD is determined using the mass of the $Ω^-$ baryon to set the physical scale. Nine ensembles using the highly improved staggered quark (HISQ) action with lattice spacings of 0.15 fm down to 0.04 fm are used, seven of which have nearly physical light-quark masses. Electromagnetic corrections to the $Ω^-$ mass are defined in order to compute a pure-QCD $Ω$ mass. The final result is $w_0 = 0.17187(68)$ fm, corresponding to a relative uncertainty of 0.40% and a central value in good agreement with previous calculations in the literature. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14367 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-Precision Scale Setting with the Omega-Baryon Mass and Gradient Flow Bazavov, Alexei Bernard, Claude W. Clarke, David A. DeTar, Carleton El-Khadra, Aida X. Gámiz, Elvira Gottlieb, Steven Grebe, Anthony V. Heller, Urs M. Hostetler, Leon Jay, William I. Jeong, Hwancheol Kronfeld, Andreas S. Lin, Yin Lahert, Shaun Laiho, Jack Lynch, Michael Lytle, Andrew T. Meyer, Aaron S. Neil, Ethan T. Peterson, Curtis T. Simone, James N. Sitison, Jacob W. Van de Water, Ruth S. Vaquero, Alejandro Wagman, Michael L. High Energy Physics - Lattice The gradient-flow scale $w_0$ in lattice QCD is determined using the mass of the $Ω^-$ baryon to set the physical scale. Nine ensembles using the highly improved staggered quark (HISQ) action with lattice spacings of 0.15 fm down to 0.04 fm are used, seven of which have nearly physical light-quark masses. Electromagnetic corrections to the $Ω^-$ mass are defined in order to compute a pure-QCD $Ω$ mass. The final result is $w_0 = 0.17187(68)$ fm, corresponding to a relative uncertainty of 0.40% and a central value in good agreement with previous calculations in the literature. |
| title | High-Precision Scale Setting with the Omega-Baryon Mass and Gradient Flow |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2509.14367 |