Measurements of top-quark pair spin correlations in the eµ channel at √s = 13 TeV using pp collisions in the ATLAS detector
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00537144" target="_blank" >RIV/68378271:_____/20:00537144 - isvavai.cz</a>
Výsledek na webu
<a href="http://hdl.handle.net/11104/0314895" target="_blank" >http://hdl.handle.net/11104/0314895</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-020-8181-6" target="_blank" >10.1140/epjc/s10052-020-8181-6</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Measurements of top-quark pair spin correlations in the eµ channel at √s = 13 TeV using pp collisions in the ATLAS detector
Popis výsledku v původním jazyce
A measurement of observables sensitive to spin correlations in ttˉt ar{t}ttˉ production is presented, using 36.1 hbox {fb}^{-1} of pp collision data at s=13sqrt{s} = 13s =13 TeV recorded with the ATLAS detector at the Large Hadron Collider. Differential cross-sections are measured in events with exactly one electron and one muon with opposite-sign electric charge as a function of the azimuthal opening angle and the absolute difference in pseudorapidity between the electron and muon candidates in the laboratory frame. The azimuthal opening angle is also measured as a function of the invariant mass of the ttˉt ar{t}ttˉ system. The measured differential cross-sections are compared to predictions by several NLO Monte Carlo generators and fixed-order calculations. The observed degree of spin correlation is somewhat higher than predicted by the generators used. The data are consistent with the prediction of one of the fixed-order calculations at NLO, but agree less well with higher-order predictions.n
Název v anglickém jazyce
Measurements of top-quark pair spin correlations in the eµ channel at √s = 13 TeV using pp collisions in the ATLAS detector
Popis výsledku anglicky
A measurement of observables sensitive to spin correlations in ttˉt ar{t}ttˉ production is presented, using 36.1 hbox {fb}^{-1} of pp collision data at s=13sqrt{s} = 13s =13 TeV recorded with the ATLAS detector at the Large Hadron Collider. Differential cross-sections are measured in events with exactly one electron and one muon with opposite-sign electric charge as a function of the azimuthal opening angle and the absolute difference in pseudorapidity between the electron and muon candidates in the laboratory frame. The azimuthal opening angle is also measured as a function of the invariant mass of the ttˉt ar{t}ttˉ system. The measured differential cross-sections are compared to predictions by several NLO Monte Carlo generators and fixed-order calculations. The observed degree of spin correlation is somewhat higher than predicted by the generators used. The data are consistent with the prediction of one of the fixed-order calculations at NLO, but agree less well with higher-order predictions.n
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10303 - Particles and field physics
Návaznosti výsledku
Projekt
<a href="/cs/project/LTT17018" target="_blank" >LTT17018: Získávání nových poznatků o mikrosvětě v infrastruktuře CERN</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
European Physical Journal C
ISSN
1434-6044
e-ISSN
—
Svazek periodika
80
Číslo periodika v rámci svazku
8
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
43
Strana od-do
1-43
Kód UT WoS článku
000565271700001
EID výsledku v databázi Scopus
2-s2.0-85090083990