Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at sqrt(s) = 7 and 8 TeV
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at sqrt(s) = 7 and 8 TeV
Original language description
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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10300 - Physical sciences
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
1029-8479
Volume of the periodical
2023
Issue of the periodical within the volume
07
Country of publishing house
DE - GERMANY
Number of pages
64
Pages from-to
213
UT code for WoS article
001058564200001
EID of the result in the Scopus database
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