Determination of the strong coupling constant from transverse energy-energy correlations in multijet events at CMS = 13 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476263" target="_blank" >RIV/00216208:11320/23:10476263 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sarLOhWe.I" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=sarLOhWe.I</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2023)085" target="_blank" >10.1007/JHEP07(2023)085</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the strong coupling constant from transverse energy-energy correlations in multijet events at CMS = 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

Measurements of transverse energy-energy correlations and their associatedazimuthal asymmetries in multijet events are presented. The analysis is performed usinga data sample corresponding to 139 fb-1 of proton-proton collisions at a centre-of-massenergy of ps = 13TeV, collected with the ATLAS detector at the Large Hadron Collider.The measurements are presented in bins of the scalar sum of the transverse momentaof the two leading jets and unfolded to particle level. They are then compared to nextto-next-to-leading-order perturbative QCD calculations for the first time, which featurea significant reduction in the theoretical uncertainties estimated using variations of therenormalisation and factorisation scales. The agreement between data and theory is good,thus providing a precision test of QCD at large momentum transfers Q. The strongcoupling constant s is extracted as a function of Q, showing a good agreement withthe renormalisation group equation and with previous analyses. A simultaneous fit toall transverse energy-energy correlation distributions across different kinematic regionsyields a value of s(mZ) = 0.1175 +- 0.0006 (exp.)+0.0034-0.0017 (theo.), while the global fit to theasymmetry distributions yields s(mZ) = 0.1185 +- 0.0009 (exp.)+0.0025-0.0012 (theo.).

Název v anglickém jazyce

Determination of the strong coupling constant from transverse energy-energy correlations in multijet events at CMS = 13 TeV with the ATLAS detector

Popis výsledku anglicky

Measurements of transverse energy-energy correlations and their associatedazimuthal asymmetries in multijet events are presented. The analysis is performed usinga data sample corresponding to 139 fb-1 of proton-proton collisions at a centre-of-massenergy of ps = 13TeV, collected with the ATLAS detector at the Large Hadron Collider.The measurements are presented in bins of the scalar sum of the transverse momentaof the two leading jets and unfolded to particle level. They are then compared to nextto-next-to-leading-order perturbative QCD calculations for the first time, which featurea significant reduction in the theoretical uncertainties estimated using variations of therenormalisation and factorisation scales. The agreement between data and theory is good,thus providing a precision test of QCD at large momentum transfers Q. The strongcoupling constant s is extracted as a function of Q, showing a good agreement withthe renormalisation group equation and with previous analyses. A simultaneous fit toall transverse energy-energy correlation distributions across different kinematic regionsyields a value of s(mZ) = 0.1175 +- 0.0006 (exp.)+0.0034-0.0017 (theo.), while the global fit to theasymmetry distributions yields s(mZ) = 0.1185 +- 0.0009 (exp.)+0.0025-0.0012 (theo.).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10300 - Physical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of High Energy Physics

ISSN

1029-8479

e-ISSN

1029-8479

Svazek periodika

2023

Číslo periodika v rámci svazku

07

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

54

Strana od-do

85

Kód UT WoS článku

001061751900001

EID výsledku v databázi Scopus

2-s2.0-85165298184