Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at sqrt(s) = 7 and 8 TeV

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F23%3A10476318" target="_blank" >RIV/00216208:11320/23:10476318 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NKBKE293pY" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=NKBKE293pY</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/JHEP07(2023)213" target="_blank" >10.1007/JHEP07(2023)213</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at sqrt(s) = 7 and 8 TeV

Popis výsledku v původním jazyce

A combination of measurements of the inclusive top-quark pair productioncross-section performed by ATLAS and CMS in proton-proton collisions at centre-of-massenergies of 7 and 8TeV at the LHC is presented. The cross-sections are obtained using topquarkpair decays with an opposite-charge electron-muon pair in the final state and withdata corresponding to an integrated luminosity of about 5 fb-1 at ps = 7 TeV and about20 fb-1 at ps = 8TeV for each experiment. The combined cross-sections are determinedto be 178.5 +- 4.7 pb at ps = 7 TeV and 243.3+6.0-5.9 pb at ps = 8TeV with a correlation of0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined crosssectionsis determined to be R8/7 = 1.363 +- 0.032. The combined measured cross-sectionsand their ratio agree well with theory calculations using several parton distribution function(PDF) sets. The values of the top-quark pole mass (with the strong coupling fixed at 0.118)and the strong coupling (with the top-quark pole mass fixed at 172.5 GeV) are extractedfrom the combined results by fitting a next-to-next-to-leading-order plus next-to-next-toleading-log QCD prediction to the measurements. Using a version of the NNPDF3.1 PDFset containing no top-quark measurements, the results obtained are mpolet = 173.4+1.8-2.0 GeVand s(mZ) = 0.1170+0.0021-0.0018.

Název v anglickém jazyce

Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at sqrt(s) = 7 and 8 TeV

Popis výsledku anglicky

A combination of measurements of the inclusive top-quark pair productioncross-section performed by ATLAS and CMS in proton-proton collisions at centre-of-massenergies of 7 and 8TeV at the LHC is presented. The cross-sections are obtained using topquarkpair decays with an opposite-charge electron-muon pair in the final state and withdata corresponding to an integrated luminosity of about 5 fb-1 at ps = 7 TeV and about20 fb-1 at ps = 8TeV for each experiment. The combined cross-sections are determinedto be 178.5 +- 4.7 pb at ps = 7 TeV and 243.3+6.0-5.9 pb at ps = 8TeV with a correlation of0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined crosssectionsis determined to be R8/7 = 1.363 +- 0.032. The combined measured cross-sectionsand their ratio agree well with theory calculations using several parton distribution function(PDF) sets. The values of the top-quark pole mass (with the strong coupling fixed at 0.118)and the strong coupling (with the top-quark pole mass fixed at 172.5 GeV) are extractedfrom the combined results by fitting a next-to-next-to-leading-order plus next-to-next-toleading-log QCD prediction to the measurements. Using a version of the NNPDF3.1 PDFset containing no top-quark measurements, the results obtained are mpolet = 173.4+1.8-2.0 GeVand s(mZ) = 0.1170+0.0021-0.0018.

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

64

Strana od-do

213

Kód UT WoS článku

001058564200001

EID výsledku v databázi Scopus

—