Loading...
Measurement of the mass difference between top quark and antiquark in pp collisions at √s = 8TeV
CMS Collaboration
CMS Collaboration
Citations
Altmetric:
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 (mt= mt−mt) 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−1collected by the CMS experiment at the LHC, and yields a value of mt=−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
Description
Date
2017-07
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
CMS, Top quark physics
Citation
CMS Collaboration. Measurement of the mass difference between top quark and antiquark in pp collisions at √s = 8TeV, Phys. Lett. (2017) 770: 50-71. https://doi.org/10.1016/j.physletb.2017.04.028