Measurement of energy correlators inside jets and determination of the strong coupling alpha_{S}(m_{Z}).

(CMS Collaboration) Hayrapetyan, Aram ; ... ; Giljanović, Duje ; Godinović, Nikola ; Lelas, Damir ; Šćulac, Ana ; Kovač, Marko ; Šćulac, Toni ; Bargassa, Pedrame ; Brigljević, Vuko ; Chitroda, Bhakti Kanulal ; Ferenček, Dinko ; Mishra, Saswat ; Starodumov, Andrey ; Šuša, Tatjana ; ... ; Roguljić, Matej ; ... ; Zhokin, Alexander (2024) Measurement of energy correlators inside jets and determination of the strong coupling alpha_{S}(m_{Z}).. Physical Review Letters, 133 (7). ISSN 0031-9007

PDF - Published Version - article Available under License Creative Commons Attribution. Download (1MB)

Abstract

Energy correlators that describe energy-weighted distances between two or three particles in a hadronic jet are measured using an event sample of sqrt[s]=13TeV proton-proton collisions collected by the CMS experiment and corresponding to an integrated luminosity of 36.3fb^{-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: alpha_{S}(m_{Z})=0.1229_{-0.0050}^{+0.0040}, the most precise alpha_{S}(m_{Z}) value obtained using jet substructure observables.

Item Type:	Article
Uncontrolled Keywords:	high energy physics ; experimental particle physics ; LHC ; CMS ; p p: colliding beams ; energy: correlation function ; quantum chromodynamics: perturbation theory ; perturbation theory: higher-order ; higher-order: 1 ; Z0: mass ; p p: scattering ; hadron: jet ; strong coupling ; strong interaction: coupling constant ; asymptotic freedom ; collinear ; confinement ; structure ; CERN LHC Coll ; data analysis method ; experimental results ; 13000 GeV-cms
Subjects:	NATURAL SCIENCES NATURAL SCIENCES > Physics NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions:	Centre for detectors, sensors and electronics Division of Experimental Physics
Depositing User:	Martina Žugaj
Date Deposited:	08 Oct 2024 11:42
URI:	http://fulir.irb.hr/id/eprint/9137
DOI:	10.1103/PhysRevLett.133.071903

Actions (login required)

View Item