scholarly journals Study of heavy-flavor quarks produced in association with top-quark pairs ats=7  TeVusing the ATLAS detector

2014 ◽  
Vol 89 (7) ◽  
Author(s):  
G. Aad ◽  
T. Abajyan ◽  
B. Abbott ◽  
J. Abdallah ◽  
S. Abdel Khalek ◽  
...  
Keyword(s):  
Top Quark ◽  
Atlas Detector ◽  
Heavy Flavor ◽  
Quark Pairs ◽  
Top Quark Pairs ◽  
Heavy Flavor Quarks

scholarly journals Top-quark properties and mass measurements with the ATLAS detector

2018 ◽  
Vol 182 ◽  
pp. 02033
Author(s):  
Tomas Dado ◽  
Keyword(s):  
Top Quark ◽  
Bound States ◽  
W Boson ◽  
Theoretical Calculations ◽  
Atlas Detector ◽  
Spin Density Matrix ◽  
Top Quark Mass ◽  
Quark Pairs ◽  
Quark Spin ◽  
Top Quark Pairs

The top quark is unique among the known quarks in that it decays before it has an opportunity to form hadronic bound states. This makes measurements of its properties particularly interesting as one can access directly the properties of a bare quark. The latest measurements of these properties with the ATLAS detector at the LHC [1] are presented. Measurements of top-quark spin observables in top-antitop events, each sensitive to a different coefficient of the spin density matrix, are presented and compared to the Standard Model predictions. The helicity of the W boson from the top decays and the production angles of the top quark are further discussed. Limits on the rate of flavour changing neutral currents in the production or decay of the top quark are reported. The production of top-quark pairs in association with W and Z bosons is also presented. The measurement probes the coupling between the top quark and the Z boson. The cross-section measurement of photons produced in association with top-quark pairs is also discussed. These process are all compared to the best available theoretical calculations. The latest ATLAS measurements of the top-quark mass in lepton+jets, dilepton, and all-hadronic final states are also reported. In addition, measurements aiming to measure the mass in a well-defined scheme are presented.

scholarly journals Invariant-mass distribution of top-quark pairs and top-quark mass determination

2020 ◽  
Vol 44 (9) ◽  
pp. 091001
Author(s):  
Wan-Li Ju ◽  
Guoxing Wang ◽  
Xing Wang ◽  
Xiaofeng Xu ◽  
Yongqi Xu ◽  
...  
Keyword(s):  
Invariant Mass ◽  
Mass Distribution ◽  
Top Quark ◽  
Quark Mass ◽  
Invariant Mass Distribution ◽  
Mass Determination ◽  
Top Quark Mass ◽  
Quark Pairs ◽  
Top Quark Pairs

scholarly journals Supersymmetric QCD parity nonconservation in top quark pairs at the Tevatron

1998 ◽  
Vol 424 (1-2) ◽  
pp. 76-84 ◽  
Author(s):  
Chong Sheng Li ◽  
C.-P. Yuan ◽  
Hong-Yi Zhou
Keyword(s):  
Top Quark ◽  
Parity Nonconservation ◽  
Quark Pairs ◽  
Top Quark Pairs

scholarly journals High-Precision Differential Predictions for Top-Quark Pairs at the LHC

2016 ◽  
Vol 116 (8) ◽  
Author(s):  
Michal Czakon ◽  
David Heymes ◽  
Alexander Mitov
Keyword(s):  
High Precision ◽  
Top Quark ◽  
Quark Pairs ◽  
Top Quark Pairs
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