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Measurement of the mass difference between top quark and antiquark in pp collisions at √s=8 TeV

CMS Collaboration; Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Erö, J.; Fabjan, C.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knünz, V.; ... mehr

Abstract:

The invariance of the standard model (SM) under the CPT transformation predicts equality of particle and antiparticle masses. This prediction is tested by measuring the mass difference between the top quark and antiquark (View the MathML source Δm$_{t}$=m$_{t}$−mt$_{t}$) that are produced in pp collisions at a center-of-mass energy of 8 TeV, using events with a muon or an electron and at least four jets in the final state. The analysis is based on data corresponding to an integrated luminosity of 19.6 fb$^{-1}$ collected by the CMS experiment at the LHC, and yields a value of View the MathML source Δm$_{t}$=−0.15±0.19(stat)±0.09(syst) GeV, which is consistent with the SM expectation. This result is significantly more precise than previously reported measurements.


Volltext §
DOI: 10.5445/IR/1000070220
Originalveröffentlichung
DOI: 10.1016/j.physletb.2017.04.028
Scopus
Zitationen: 14
Web of Science
Zitationen: 12
Dimensions
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik – Institut für Experimentelle Kernphysik (IEKP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2017
Sprache Englisch
Identifikator ISSN: 0370-2693, 1873-2445
urn:nbn:de:swb:90-702203
KITopen-ID: 1000070220
Erschienen in Physics letters / B
Verlag North-Holland Publishing
Band 770
Seiten 50-71
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagwörter CMS; Top quark physics
Nachgewiesen in Dimensions
Web of Science
Scopus
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