PoS - Proceedings of Science
Volume 469 - 31st International Workshop on Deep Inelastic Scattering (DIS2024) - WG1: Structure Functions and Parton Densities
CMS jet measurements and constraints on PDFs and $\alpha_\text{s}$
D. Savoiu*  on behalf of the CMS Collaboration
Full text: pdf
Pre-published on: December 27, 2024
Published on: January 16, 2025
Abstract
A selection of recent jet measurements in proton-proton collisions
from the CMS Collaboration at the CERN LHC is presented.
Several experimental results targeting jet production are summarized, including
differential measurements of the inclusive jet cross section at center-of-mass
energies of $\sqrt{s}$ = 13 TeV and 5.02 TeV, and of the dijet cross section
at $\sqrt{s}$ = 13 TeV.
The measurements are compared to state-of-the-art theoretical predictions
at next-to-next-to-leading-order accuracy in perturbative QCD, and the strong coupling
constant $\alpha_\text{s}(m_\text{Z})$ is extracted simultaneously with the parton distribution functions (PDFs)
of the proton at 13 TeV.
A further experimental handle on $\alpha_\text{s}(m_\text{Z})$ is provided by a measurement of jet
azimuthal correlations.
Finally, a novel measurement of the energy-energy correlators inside jets is outlined. These provide
an additional way of determining $\alpha_\text{s}(m_\text{Z})$ while also constituting useful observables for
probing phase spaces dominated by nonperturbative processes like hadronization and have
applications in the context of Monte Carlo event generator tuning.
DOI: https://doi.org/10.22323/1.469.0028
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