Abstract
An overview of recent top quark measurements in proton-proton collisions at √ s = 7 and 8 Te V in data collected with the CMS experiment at the LHC, using a data sample collected during the years 2011 and 2012 is presented. Measurements of top quark pair production cross sections in several top quark final states are reported, as well as electroweak production of single top quarks in both t- and tW-channels. The mass of the top quark is estimated by different methods.
Highlights
The top quark is the heaviest elementary particle known, it decays before fragmenting into hadrons providing a unique possibility to measure the properties of a bare quark
The Large Hadron Collider (LHC) has operated remarkably well in 2011 and 2012, and Compact Muon Solenoid (CMS) [1] has collected a large sample of top-quark events and studies of top-quark production have been conducted in various decay channels as well as searches for deviations from the SM predictions
The CMS detector has developed a full program of measurements related with the top-quark at 7 and 8 TeV using the luminosity collected at both energies during the years 2011 and 2012
Summary
The top quark is the heaviest elementary particle known, it decays before fragmenting into hadrons providing a unique possibility to measure the properties of a bare quark. The large value of mtop makes the Yukawa coupling to the Higgs boson to be close to 1. For this reason, it is often believed that the top quark can play a special role in the electroweak symmetry breaking mechanism. The top quark is part of many possible beyond the Standard Model (BSM) signatures, where it can be a decay mode of, yet unknown, heavy particles. The Large Hadron Collider (LHC) has operated remarkably well in 2011 and 2012, and CMS [1] has collected a large sample of top-quark events and studies of top-quark production have been conducted in various decay channels as well as searches for deviations from the SM predictions
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