Abstract
An overview of the measurements and searches in the top quark sector at the LHC is presented. Due to the large amount of data recorded by the ATLAS and CMS experiments at a centre-of-mass energy of 13 TeV, top quark properties and couplings in production and decay can be studied with an unprecedented precision and compared to predictions of the standard model to shed light on the possible presence of new physics.
Highlights
The top quark was the last standard model (SM) fermion to be discovered in 1995
The total t tproduction cross section has been measured in proton collision data at the LHC at four different centre-of-mass energies as shown in Figure 1, where the measurements are compared to the state-of-the-art prediction [1]
The single top quark production cross section is directly proportional to the square of the CKM matrix element Vtb provided that there are no significant contributions from the tW s and tW d couplings
Summary
The top quark was the last standard model (SM) fermion to be discovered in 1995 This up-type third-generation quark was first observed by the CDF and D0 Collaborations at the Tevatron collider. Initial studies of the top quark production cross sections and the top quark properties have been performed at the Tevatron collider at a centre-of-mass energy s = 1.96 TeV. The precision of these measurements was quickly surpassed when the LHC started colliding protons at s = 7 TeV. For the studies based on single top quark events the leptonic decay of the W boson is typically considered
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