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Top quark physics in hadron collisions
The top quark is the heaviest elementary particle observed to date. Its large
mass makes the top quark an ideal laboratory to test predictions of
perturbation theory concerning heavy quark production at hadron colliders. The
top quark is also a powerful probe for new phenomena beyond the Standard Model
of particle physics. In addition, the top quark mass is a crucial parameter for
scrutinizing the Standard Model in electroweak precision tests and for
predicting the mass of the yet unobserved Higgs boson. Ten years after the
discovery of the top quark at the Fermilab Tevatron top quark physics has
entered an era where detailed measurements of top quark properties are
undertaken. In this review article an introduction to the phenomenology of top
quark production in hadron collisions is given, the lessons learned in Tevatron
Run I are summarized, and first Run II results are discussed. A brief outlook
to the possibilities of top quark research a the Large Hadron Collider,
currently under construction at CERN, is included.Comment: 84 pages, 32 figures, accepted for publication by Reports on Progress
in Physic
Measurements of the Production, Decay and Properties of the Top Quark: A Review
With the full Tevatron Run II and early LHC data samples, the opportunity for
furthering our understanding of the properties of the top quark has never been
more promising. Although the current knowledge of the top quark comes largely
from Tevatron measurements, the experiments at the LHC are poised to probe
top-quark production and decay in unprecedented regimes. Although no current
top quark measurements conclusively contradict predictions from the standard
model, the precision of most measurements remains statistically limited.
Additionally, some measurements, most notably the forward-backward asymmetry in
top quark pair production, show tantalizing hints of beyond-the-Standard-Model
dynamics. The top quark sample is growing rapidly at the LHC, with initial
results now public. This review examines the current status of top quark
measurements in the particular light of searching for evidence of new physics,
either through direct searches for beyond the standard model phenomena or
indirectly via precise measurements of standard model top quark properties
Top quark properties
The multi-purpose experiments at CERN's Large Hadron Collider have a very
rich programme in top quark physics. The large amount of data allows for
measuring the top quark properties with an unprecedented precision. This
document presents some of the properties that have been measured using top
quark pair events produced in proton-proton collisions with a centre-of-mass
energy of 13 TeV. The focus lies on the measurements of the colour flow, the
charge asymmetry and spin correlations in top quark pair events.Comment: 5 pages, 6 figures, TOP2018 conference proceeding
Top Quark Measurements in CMS
Measurements involving top quarks provide important tests of QCD. A selected
set of top quark measurements in CMS including the strong coupling constant,
top quark pole mass, constraints on parton distribution functions, top quark
pair differential cross sections, ttbar+0 and >0 jet events, top quark mass
studied using various kinematic variables in different phase-space regions, and
alternative top quark mass measurements is presented. The evolution of expected
uncertainties in future LHC runs for the standard and alternative top quark
mass measurements is also presented.Comment: 6 pages, 11 figures, To appear in the proceedings of QCD14: 17th High
Energy International Conference in Quantum Chromodynamics, 30 Jun-4 Jul 2014,
Montpellier (France
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