The strong coupling from the IR to the UV extremes: Determination of $α_s$ and prospects from EIC and JLab at 22 GeV
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866915587193569280 |
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| author | Deur, A. |
| author_facet | Deur, A. |
| contents | We discuss how the Bjorken sum rule allows access to the QCD running coupling $α_s$ at any scale, including in the deep infrared IR domain. The Bjorken sum data from Jefferson Lab, together with the world data on $α_s$ reported by the Particle Data Group, allow us to determine the running of $α_s(Q)$ over five orders of magnitude in four-momentum $Q$. We present two possible future measurements of the running of $α_s(Q)$ using the Bjorken sum rule: the first at the EIC, covering the range $1.5 < Q < 8.7$ GeV, and the second at Jefferson Lab at 22 GeV, covering the range $1.0 < Q < 4.7$ GeV. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_19556 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The strong coupling from the IR to the UV extremes: Determination of $α_s$ and prospects from EIC and JLab at 22 GeV Deur, A. High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment We discuss how the Bjorken sum rule allows access to the QCD running coupling $α_s$ at any scale, including in the deep infrared IR domain. The Bjorken sum data from Jefferson Lab, together with the world data on $α_s$ reported by the Particle Data Group, allow us to determine the running of $α_s(Q)$ over five orders of magnitude in four-momentum $Q$. We present two possible future measurements of the running of $α_s(Q)$ using the Bjorken sum rule: the first at the EIC, covering the range $1.5 < Q < 8.7$ GeV, and the second at Jefferson Lab at 22 GeV, covering the range $1.0 < Q < 4.7$ GeV. |
| title | The strong coupling from the IR to the UV extremes: Determination of $α_s$ and prospects from EIC and JLab at 22 GeV |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment |
| url | https://arxiv.org/abs/2510.19556 |