Evidence for the charge asymmetry in pp -> tt(bar) production 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%3A10476323" target="_blank" >RIV/00216208:11320/23:10476323 - isvavai.cz</a>

Výsledek na webu

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

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP08(2023)077" target="_blank" >10.1007/JHEP08(2023)077</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evidence for the charge asymmetry in pp -> tt(bar) production at CMS = 13 TeV with the ATLAS detector

Popis výsledku v původním jazyce

Inclusive and differential measurements of the top-antitop (t-t) charge asymmetryAt-tC and the leptonic asymmetry A&apos;-&apos;C are presented in proton-proton collisions atps = 13 TeV recorded by the ATLAS experiment at the CERN Large Hadron Collider.The measurement uses the complete Run 2 dataset, corresponding to an integrated luminosityof 139 fb-1, combines data in the single-lepton and dilepton channels, and employsreconstruction techniques adapted to both the resolved and boosted topologies. A Bayesianunfolding procedure is performed to correct for detector resolution and acceptance effects.The combined inclusive t-t charge asymmetry is measured to be At-tC = 0.0068 +- 0.0015,which differs from zero by 4.7 standard deviations. Differential measurements are performedas a function of the invariant mass, transverse momentum and longitudinal boostof the t-t system. Both the inclusive and differential measurements are found to be compatiblewith the Standard Model predictions, at next-to-next-to-leading order in quantumchromodynamics perturbation theory with next-to-leading-order electroweak corrections.The measurements are interpreted in the framework of the Standard Model effective fieldtheory, placing competitive bounds on several Wilson coefficients.

Název v anglickém jazyce

Evidence for the charge asymmetry in pp -> tt(bar) production at CMS = 13 TeV with the ATLAS detector

Popis výsledku anglicky

Inclusive and differential measurements of the top-antitop (t-t) charge asymmetryAt-tC and the leptonic asymmetry A&apos;-&apos;C are presented in proton-proton collisions atps = 13 TeV recorded by the ATLAS experiment at the CERN Large Hadron Collider.The measurement uses the complete Run 2 dataset, corresponding to an integrated luminosityof 139 fb-1, combines data in the single-lepton and dilepton channels, and employsreconstruction techniques adapted to both the resolved and boosted topologies. A Bayesianunfolding procedure is performed to correct for detector resolution and acceptance effects.The combined inclusive t-t charge asymmetry is measured to be At-tC = 0.0068 +- 0.0015,which differs from zero by 4.7 standard deviations. Differential measurements are performedas a function of the invariant mass, transverse momentum and longitudinal boostof the t-t system. Both the inclusive and differential measurements are found to be compatiblewith the Standard Model predictions, at next-to-next-to-leading order in quantumchromodynamics perturbation theory with next-to-leading-order electroweak corrections.The measurements are interpreted in the framework of the Standard Model effective fieldtheory, placing competitive bounds on several Wilson coefficients.

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

08

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

89

Strana od-do

077

Kód UT WoS článku

001062398000001

EID výsledku v databázi Scopus

2-s2.0-85169322582