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arXiv · 2412.16665

Determination of the strong coupling and its running from measurements of inclusive jet production

CMS Collaboration
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Abstract

The value of the strong coupling $\alpha_\mathrm{S}$ is determined in a comprehensive analysis at next-to-next-to-leading order accuracy in quantum chromodynamics. The analysis uses double-differential cross section measurements from the CMS Collaboration at the CERN LHC of inclusive jet production in proton-proton collisions at centre-of-mass energies of 2.76, 7, 8, and 13 TeV, combined with inclusive deep-inelastic data from HERA. The value $\alpha_\mathrm{S}(m_\mathrm{Z})$ = 0.1176$\,^{+0.0014}_{-0.0016}$ is obtained at the scale of the Z boson mass. By using the measurements in different intervals of jet transverse momentum, the running of $\alpha_\mathrm{S}$ is probed for energies between 100 and 1600 GeV.

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CMS Collaboration. 2024-12-21. Determination of the strong coupling and its running from measurements of inclusive jet production. https://doi.org/10.1016/j.physletb.2025.139651

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