Measurement of the tt(bar) production cross-section in pp collisions at CMS = 5.02 TeV with the ATLAS detector

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10475973" target="_blank" >RIV/00216208:11320/23:10475973 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=D3I0pW4qUy" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=D3I0pW4qUy</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP06(2023)138" target="_blank" >10.1007/JHEP06(2023)138</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Measurement of the tt(bar) production cross-section in pp collisions at CMS = 5.02 TeV with the ATLAS detector

Popis výsledku v původním jazyce

The inclusive top-quark pair (t-t) production cross-section t-t is measured inproton-proton collisions at a centre-of-mass energy ps = 5.02TeV, using 257 pb-1 of datacollected in 2017 by the ATLAS experiment at the LHC. The t-t cross-section is measuredin both the dilepton and single-lepton final states of the t-t system and then combined. Thecombination of the two measurements yieldst-t = 67.5 +- 0.9 (stat.) +- 2.3 (syst.) +- 1.1 (lumi.) +- 0.2 (beam) pb,where the four uncertainties reflect the limited size of the data sample, experimental andtheoretical systematic effects, and imperfect knowledge of both the integrated luminosityand the LHC beam energy, giving a total uncertainty of 3.9%. The result is in agreementwith theoretical quantum chromodynamic calculations at next-to-next-to-leading order inthe strong coupling constant, including the resummation of next-to-next-to-leading logarithmicsoft-gluon terms, and constrains the parton distribution functions of the proton atlarge Bjorken-x.

Název v anglickém jazyce

Measurement of the tt(bar) production cross-section in pp collisions at CMS = 5.02 TeV with the ATLAS detector

Popis výsledku anglicky

The inclusive top-quark pair (t-t) production cross-section t-t is measured inproton-proton collisions at a centre-of-mass energy ps = 5.02TeV, using 257 pb-1 of datacollected in 2017 by the ATLAS experiment at the LHC. The t-t cross-section is measuredin both the dilepton and single-lepton final states of the t-t system and then combined. Thecombination of the two measurements yieldst-t = 67.5 +- 0.9 (stat.) +- 2.3 (syst.) +- 1.1 (lumi.) +- 0.2 (beam) pb,where the four uncertainties reflect the limited size of the data sample, experimental andtheoretical systematic effects, and imperfect knowledge of both the integrated luminosityand the LHC beam energy, giving a total uncertainty of 3.9%. The result is in agreementwith theoretical quantum chromodynamic calculations at next-to-next-to-leading order inthe strong coupling constant, including the resummation of next-to-next-to-leading logarithmicsoft-gluon terms, and constrains the parton distribution functions of the proton atlarge Bjorken-x.

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

06

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

54

Strana od-do

138

Kód UT WoS článku

001035251000001

EID výsledku v databázi Scopus

2-s2.0-85163625862