Chatrchyan, S;
Khachatryan, V;
Sirunyan, AM;
Tumasyan, A;
Adam, W;
Bergauer, T;
Dragicevic, M;
... Collaboration, CMS; + view all
(2012)
Measurement of the mass difference between top and antitop quarks.
Journal of High Energy Physics
, 2012
(6)
, Article 109. 10.1007/JHEP06(2012)109.
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Abstract
A measurement of the mass difference between the top and the antitop quark (Δm t = m t − mt¯ ) is performed using events with a muon or an electron and at least four jets in the final state. The analysis is based on data collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.96±0.11 fb−1, and yields the value of Δm t = −0.44±0.46 (stat.)±0.27 (syst.) GeV. This result is consistent with equality of particle and antiparticle masses required by CPT invariance, and provides a significantly improved precision relative to existing measurements.
| Type: | Article |
|---|---|
| Title: | Measurement of the mass difference between top and antitop quarks |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP06(2012)109 |
| Publisher version: | http://dx.doi.org/10.1007/JHEP06(2012)109 |
| Language: | English |
| Additional information: | This is an open-access article distributed under the terms of the Creative Commons Attribution License[http://creativecommons.org/licenses/by/4.0/], which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
| Keywords: | Hadron-Hadron Scattering |
| 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 UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1355968 |
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