Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Bergauer, T;
Brandstetter, J;
Dragicevic, M;
... Carvalho, W; + view all
(2020)
Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV.
Journal of High Energy Physics
, 2020
(2)
, Article 191. 10.1007/JHEP02(2020)191.
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Abstract
The cross section of top quark pair production is measured in the t¯t → (`ν` )(τhντ )bb final state, where ¯ τh refers to the hadronic decays of the τ lepton, and ` is either an electron or a muon. The data sample corresponds to an integrated luminosity of 35.9 fb−1 collected in proton-proton collisions at √ s = 13 TeV with the CMS detector. The measured cross section is σt¯t = 781 ± 7 (stat) ± 62 (syst) ± 20 (lumi) pb, and the ratio of the partial width Γ(t → τντb) to the total decay width of the top quark is measured to be 0.1050 ± 0.0009 (stat) ± 0.0071 (syst). This is the first measurement of the t¯t production cross section in proton-proton collisions at √ s = 13 TeV that explicitly includes τ leptons. The ratio of the cross sections in the `τh and `` final states yields a value R`τh/`` = 0.973 ± 0.009 (stat) ± 0.066 (syst), consistent with lepton universality
| Type: | Article |
|---|---|
| Title: | Measurement of the top quark pair production cross section in dilepton final states containing one τ lepton in pp collisions at √s = 13 TeV |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP02(2020)191 |
| Publisher version: | https://doi.org/10.1007/JHEP02(2020)191 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. https://creativecommons.org/licenses/by/4.0/ |
| Keywords: | Hadron-Hadron scattering (experiments), Top physics |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10097452 |
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