Measurement of energy correlators inside jets and determination of the strong coupling α_{S}(m_{Z})
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of √𝑠=13 TeV proton-proton collisions collected by the CMS experiment and corresponding to an integrated luminosity of 36.3 fb−1. The measured distributions are consistent with the trends in the simulation that reveal two key features of the strong interaction: confinement and asymptotic freedom. By comparing the ratio of the measured three- and two-particle energy correlator distributions with theoretical calculations that resum collinear emissions at approximate next-to-next-to-leading-logarithmic accuracy matched to a next-to-leading-order calculation, the strong coupling is determined at the 𝑍 boson mass: 𝛼𝑆(𝑚𝑍)=0.1229+0.0040
−0.0050, the most precise 𝛼𝑆(𝑚𝑍) value obtained using jet substructure observables.
−0.0050, the most precise 𝛼𝑆(𝑚𝑍) value obtained using jet substructure observables.
Date Issued
2024-08-16
Date Acceptance
2024-06-10
Citation
Physical Review Letters, 2024, 133 (7)
ISSN
0031-9007
Publisher
American Physical Society (APS)
Journal / Book Title
Physical Review Letters
Volume
133
Issue
7
Copyright Statement
© 2024 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of
the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP 3.
the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP 3.
License URL
Identifier
https://doi.org/10.1103/physrevlett.133.071903
Publication Status
Published
Article Number
071903
Date Publish Online
2024-08-14