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| CMS-TOP-11-019 ; CERN-PH-EP-2012-104 | ||
| Measurement of the mass difference between top and antitop quarks | ||
| CMS Collaboration | ||
| 12 April 2012 | ||
| J. High Energy Phys. 06 (2012) 109 | ||
| Abstract: A measurement of the mass difference between the top and the antitop quark (Delta m(t) = m(t) - m(anti-t)) 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 inverse femtobarns, and yields the value of Delta m(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. | ||
| Links: e-print arXiv:1204.2807 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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