Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at √s=7 and 8 TeV
A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electro...
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| Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , , |
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| Körperschaften: | , |
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
27 July 2023
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| In: |
Journal of high energy physics
Year: 2023, Heft: 7, Pages: 1-64 |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/JHEP07(2023)213 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP07(2023)213
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| Verfasserangaben: | The ATLAS collaboration* and the CMS collaboration |
MARC
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| 245 | 1 | 0 | |a Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at √s=7 and 8 TeV |c The ATLAS collaboration* and the CMS collaboration |
| 246 | 3 | 0 | |a sqrt |
| 246 | 3 | 3 | |a Combination of inclusive top-quark pair production cross-section measurements using ATLAS and CMS data at square root s = 7 and 8 TeV |
| 264 | 1 | |c 27 July 2023 | |
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| 500 | |a Veröffentlicht: 27. Juli 2023 | ||
| 500 | |a Im Titel steht der Buchstabe s unter dem Wurzelsymbol | ||
| 500 | |a *ATLAS collaboration: G. Aad, F. Bartels, F.L. Castillo, M.M. Czurylo, M. Dunford, S. Franchino, M. Klassen, T. Mkrtchyan, P.S. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H-C. Schultz-Coulon, T.M. Spieker, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, J. Zinsser [und sehr viele weitere Personen] | ||
| 500 | |a Gesehen am 17.05.2024 | ||
| 520 | |a A combination of measurements of the inclusive top-quark pair production cross-section performed by ATLAS and CMS in proton-proton collisions at centre-of-mass energies of 7 and 8 TeV at the LHC is presented. The cross-sections are obtained using top-quark pair decays with an opposite-charge electron-muon pair in the final state and with data corresponding to an integrated luminosity of about 5 fb−1 at √s = 7 TeV and about 20 fb−1 at √s = 8 TeV for each experiment. The combined cross-sections are determined to be 178.5 ± 4.7 pb at √s = 7 TeV and $$ {243.3}_{-5.9}^{+6.0} $$pb at √s = 8 TeV with a correlation of 0.41, using a reference top-quark mass value of 172.5 GeV. The ratio of the combined cross-sections is determined to be R8/7 = 1.363 ± 0.032. The combined measured cross-sections and 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 extracted from the combined results by fitting a next-to-next-to-leading-order plus next-to-next-to-leading-log QCD prediction to the measurements. Using a version of the NNPDF3.1 PDF set containing no top-quark measurements, the results obtained are {m}_t^{\textrm{pole}}={173.4}_{-2.0}^{+1.8} $$GeV and $$ {\alpha}_{\textrm{s}}\left({m}_Z\right)={0.1170}_{-0.0018}^{+0.0021}. | ||
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