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Measurement of the mass difference between top and antitop quarks

2012-04Journal article Open access
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dc.contributor.authorCMS collaboration (2209 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorNayak, Aruna
dc.contributor.authorAlmeida, Nuno
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorMusella, Pasquale
dc.contributor.authorSeixas, Joao
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSilva, Pedro
dc.contributor.authorPela, Joao
dc.contributor.authorLeonardo, Nuno
dc.date.accessioned2019-02-03T19:41:45Z
dc.date.available2019-02-03T19:41:45Z
dc.date.issued2012-04
dc.date.updated2019-02-03T19:41:45Z
dc.description.abstractA 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.
dc.description.versionPeer Reviewed
dc.identifierJHEP 1206 (2012) 109; DOI 10.1007/JHEP06(2012)109
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP06(2012)109
dc.identifier.urihttp://hdl.handle.net/10400.26/26156
dc.language.isoeng
dc.titleMeasurement of the mass difference between top and antitop quarks
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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