Электронный каталог

Статья

Hayrapetyan, A.
Measurement of Energy Correlators Inside Jets and Determination of the Strong Coupling *a&sub(S)m&sub(Z) / A.Hayrapetyan, S.Afanasiev, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, N.Krasnikov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, O.Teryaev, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, Z.Tsamalaidze, [CMS Collab.] // Physical Review Letters [Electronic resource]. – 2024. – Vol. 133, No. 7. – P.071903. – URL: https://doi.org/10.1103/PhysRevLett.133.071903. – Bibliogr.: 77.

Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of ffiffiffi s p ¼ 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: αSðmZ Þ ¼ 0.1229þ0.0040 −0.0050 , the most precise αSðmZÞ value obtained using jet substructure observables.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 324.1д - Квантовая хромодинамика$