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| Format: | Preprint |
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2025
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| Online Access: | https://arxiv.org/abs/2507.01670 |
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| _version_ | 1866916822365765632 |
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| author | Pires, João |
| author_facet | Pires, João |
| contents | In this talk we present a determination of the strong coupling constant $α_\text{s}$ and its energy-scale dependence based on a next-to-next-to-leading order (NNLO) QCD analysis of dijet production. Using the invariant mass of the dijet system to probe $α_\text{s}$ at different scales, we extract a value of $α_\text{s}(m_\text{Z})=0.1178 \pm 0.0022$ from LHC dijet data. The combination of various LHC datasets significantly extends the precision and scale reach of the analysis, enabling the first determination of $α_\text{s}$ up to 7 TeV. By incorporating dijet cross sections from HERA, we further probe $α_\text{s}$ at smaller scales, covering a kinematic range of more than three orders of magnitude. Our results are in excellent agreement with QCD predictions based on the renormalization group equation, providing a stringent test of the running of the strong coupling across a wide energy range. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_01670 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Precision determination of $α_\text{s}$ from Dijet Cross Sections in the Multi-TeV Range Pires, João High Energy Physics - Phenomenology High Energy Physics - Experiment In this talk we present a determination of the strong coupling constant $α_\text{s}$ and its energy-scale dependence based on a next-to-next-to-leading order (NNLO) QCD analysis of dijet production. Using the invariant mass of the dijet system to probe $α_\text{s}$ at different scales, we extract a value of $α_\text{s}(m_\text{Z})=0.1178 \pm 0.0022$ from LHC dijet data. The combination of various LHC datasets significantly extends the precision and scale reach of the analysis, enabling the first determination of $α_\text{s}$ up to 7 TeV. By incorporating dijet cross sections from HERA, we further probe $α_\text{s}$ at smaller scales, covering a kinematic range of more than three orders of magnitude. Our results are in excellent agreement with QCD predictions based on the renormalization group equation, providing a stringent test of the running of the strong coupling across a wide energy range. |
| title | Precision determination of $α_\text{s}$ from Dijet Cross Sections in the Multi-TeV Range |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2507.01670 |