Combination of Measurements of the Top Quark Mass from Data Collected by the ATLAS and CMS Experiments at √𝑠 =7 and 8 TeV
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Date
2024
Authors
Hayrapetyan, A.
Tumasyan, A.
Adam, W.
Andrejkovic, J.W.
Bergauer, T.
Chatterjee, S.
Damanakis, K.
Dragicevic, M.
Hussain, P.S.
Jeitler, M.
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Journal article
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Physical Review Letters, 2024; 132(26):261902-1-261902-37
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ATLAS Collaboration and CMS Collaboration
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Abstract
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. The datasets used correspond to an integrated luminosity of up to 5 and 20 fb−1 of proton-proton collisions at center-of-mass energies of 7 and 8 TeV, respectively. The combination includes measurements in top quark pair events that exploit both the semileptonic and hadronic decays of the top quark, and a measurement using events enriched in single top quark production via the electroweak 𝑡 channel. The combination accounts for the correlations between measurements and achieves an improvement in the total uncertainty of 31% relative to the most precise input measurement. The result is 𝑚𝑡=172.52±0.14(stat)±0.30(syst) GeV, with a total uncertainty of 0.33 GeV.
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© 2024 CERN, for the CMS and ATLASs Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3