Strong coupling in (2+1+1)-flavor QCD
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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917912179113984 |
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| author | Leino, Viljami Bazavov, Alexei Brambilla, Nora Kronfeld, Andreas Mayer-Steudte, Julian Petreczky, Peter Steinbeißer, Sebastian Vairo, Antonio Weber, Johannes Heinrich |
| author_facet | Leino, Viljami Bazavov, Alexei Brambilla, Nora Kronfeld, Andreas Mayer-Steudte, Julian Petreczky, Peter Steinbeißer, Sebastian Vairo, Antonio Weber, Johannes Heinrich |
| contents | The strong coupling $α_\mathrm{s}$ can be obtained from the static energy as shown in previous lattices studies. For short distances, the static energy can be calculated both on the lattice with the use of Wilson line correlators, and with the perturbation theory up to three loop accuracy with leading ultrasoft log resummation. Comparing the perturbative expression and lattice data allows for precise determination of $α_\mathrm{s}(m_Z)$. We will present preliminary results for the determination of $α_\mathrm{s} {(M_Z)}$ in (2+1+1)-flavor QCD using the configurations made availableby the MILC-collaboration with smallest lattice spacing reaching 0.0321fm. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2502_01453 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Strong coupling in (2+1+1)-flavor QCD Leino, Viljami Bazavov, Alexei Brambilla, Nora Kronfeld, Andreas Mayer-Steudte, Julian Petreczky, Peter Steinbeißer, Sebastian Vairo, Antonio Weber, Johannes Heinrich High Energy Physics - Lattice High Energy Physics - Phenomenology The strong coupling $α_\mathrm{s}$ can be obtained from the static energy as shown in previous lattices studies. For short distances, the static energy can be calculated both on the lattice with the use of Wilson line correlators, and with the perturbation theory up to three loop accuracy with leading ultrasoft log resummation. Comparing the perturbative expression and lattice data allows for precise determination of $α_\mathrm{s}(m_Z)$. We will present preliminary results for the determination of $α_\mathrm{s} {(M_Z)}$ in (2+1+1)-flavor QCD using the configurations made availableby the MILC-collaboration with smallest lattice spacing reaching 0.0321fm. |
| title | Strong coupling in (2+1+1)-flavor QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2502.01453 |