Top-quark physics results from CMS

Abstract

The top quark is the heaviest particle observed. In many aspects, it is of a major interest in particle physics. It decays before it hadronizes, which allows for precise measurement of the top-quark properties. It also has the largest couplings to the Higgs boson, due to its large mass, and thus could play an special role in the electroweak symmetry breaking. While topquark physic is crucial for our understanding of the Standard Model (SM), it is providing a very important window to potential new physics. Indeed, top-quark events have signatures comparable to many new physics prediction (BSM), and a good understanding of the topquark background is mandatory for validating the detector performance and the simulation, but also for improving theoretical calculations and Monte-Carlo generation. Furthermore, precise measurements related to the top-quark can be used to indirectly probe new physics when searching for deviations with respect to the SM predictions. While many major contributions to the top-quark physics were performed by the CMS collaboration [1], only some of the most significant results are presented in this proceeding. In the following, the top-quark pair and single-top-quark production cross section measurements will be first discussed. After discussing top-quark mass measurements, the top-quark properties, as well as the corresponding search for new physics, are discussed.