Sirunyan, AM;
Tumasyan, A;
Adam, W;
Ambrogi, F;
Asilar, E;
Bergauer, T;
Brandstetter, J;
... Woods, N; + view all
(2019)
Measurement of the top quark mass in the all- jets final state at root s=13 TeV and combination with the lepton plus jets channel.
The European Physical Journal C
, 79
, Article 313. 10.1140/epjc/s10052-019-6788-2.
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Abstract
A top quark mass measurement is performed using 35.9 fb−1 of LHC proton–proton collision data collected with the CMS detector at √s = 13 TeV. The measurement uses the tt all-jets final state. A kinematic fit is performed to reconstruct the decay of the tt system and suppress the multijet background. Using the ideogram method, the top quark mass (mt) is determined, simultaneously constraining an additional jet energy scale factor (JSF). The resulting value of mt = 172.34 ± 0.20 (stat+JSF) ± 0.70 (syst) GeV is in good agreement with previous measurements. In addition, a combined measurement that uses the tt lepton+jets and all-jets final states is presented, using the same mass extraction method, and provides an mt measurement of 172.26 ± 0.07 (stat+JSF) ± 0.61 (syst) GeV. This is the first combined mt extraction from the lepton+jets and all-jets channels through a single likelihood function.
| Type: | Article |
|---|---|
| Title: | Measurement of the top quark mass in the all- jets final state at root s=13 TeV and combination with the lepton plus jets channel |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s10052-019-6788-2 |
| Publisher version: | https://doi.org/10.1140/epjc/s10052-019-6788-2 |
| Language: | English |
| Additional information: | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
| 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/10073948 |
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