scholarly journals Measurement of the charge asymmetry in highly boosted top-quark pair production in s=8 TeV pp collision data collected by the ATLAS experiment

2016 ◽  
Vol 756 ◽  
pp. 52-71 ◽  
Author(s):  
G. Aad ◽  
B. Abbott ◽  
J. Abdallah ◽  
O. Abdinov ◽  
B. Abeloos ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Charge Asymmetry ◽  
Atlas Experiment ◽  
8 Tev

scholarly journals Top quark studies with the ATLAS detector

2015 ◽  
Vol 39 ◽  
pp. 1560092
Author(s):  
Marcella Capua
Keyword(s):  
Pair Production ◽  
Cross Sections ◽  
Top Quark ◽  
W Boson ◽  
Production Cross ◽  
Charge Asymmetry ◽  
Atlas Detector ◽  
Top Quark Production ◽  
Top Pair Production ◽  
8 Tev

The latest top quark studies in proton-proton collisions at a centre-of-mass energy of 7 and 8 TeV with the ATLAS detector are reported. We present recent results on the top pair production inclusive cross-sections, top pair production differential cross-section in the resolved and boosted regimes, single top-quark production cross-sections measured in the t-channel, s-channel and W-boson associated processes, as well as the determination of the CKM matrix element [Formula: see text]. The results are compared with theoretical expectations. Latest ATLAS results on top properties will be also shown in terms of direct and pole mass, spin correlations and charge asymmetry.

scholarly journals Measurement of the charge asymmetry in top quark pair production inppcollisions ats=8  TeVusing a template method

2016 ◽  
Vol 93 (3) ◽  
Author(s):  
V. Khachatryan ◽  
A. M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
E. Asilar ◽  
...  
Keyword(s):  
Pair Production ◽  
Top Quark ◽  
Charge Asymmetry ◽  
Template Method

scholarly journals Charge Asymmetry in Top Quark Pair Production

Symmetry ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1278
Author(s):  
Roman Lysák
Keyword(s):  
Elementary Particle ◽  
Pair Production ◽  
Top Quark ◽  
Charge Asymmetry ◽  
New Physics ◽  
Current Theory ◽  
Elementary Particles ◽  
Standard Deviations ◽  
Theoretical Side

The top quark is the heaviest elementary particle known. It has been proposed many times that new physics beyond the current theory of elementary particles may reveal itself in top quark interactions. The charge asymmetry in the pair production of a fermion and its antiparticle has been known for many decades. Early measurements of such asymmetry in top quark pair production showed a disagreement with the prediction by more than 3 standard deviations. Many years of an effort on both experimental and theoretical side have allowed to understand the top quark pair charge asymmetry better and to bring back the agreement between the measurements and the theory. In this article, these efforts are reviewed together with the discussion about a potential future of such measurements.

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