CMS CollaborationKAI-FENG CHEN2021-07-282021-07-28201818248039https://www.scopus.com/inward/record.uri?eid=2-s2.0-85069950325&partnerID=40&md5=91329cc07629c1c34618a3f022942893https://scholars.lib.ntu.edu.tw/handle/123456789/573701Measurements of top quark properties using data collected by the CMS experiment at 13 TeV are presented. The top quark mass is measured in the lepton+jets channel is consistent with the CMS measurements of Run-1. The top quark mass is also studied as a function of the event kinematical properties. For the first time at the LHC, the width of the top quark is directly probed during Run-2, in what constitutes the most precise direct bound of the top quark width performed to date. Finally, searches for flavor-changing neutral currents involving top quarks are also discussed including tZq, and tHq couplings, in top quark pair and single top production. ? Copyright owned by the author(s) under the terms of the Creative Commons.Inelastic scattering; Tellurium compounds; Flavor changing neutral currents; Measurements of; Top quarks; Elementary particlesconference paper2-s2.0-85069950325