Speaker
Description
Currently large $t\bar{t}$ production at the LHC allows detail study of the top quark, $t\bar{t}$quark pairs. The talk will instrodude the results of the analysis interested with the measurement of differential cross-section of high boosted $t$ quark and $t \bar{t}$ pairs as a function of various kinematic observables. Study is performed on the full datasets collected by the ATLAS detector at $\sqrt{s}=13$ TeV and $pp$ collisions in $2015$ and $2016$. The integrated luminosity of considered datasets reached up $36.1$ fb$^{-1}$. The studied spectra were corrected for detector effects and devolved to particle and parton fiducial phase space. The comparison is done with several type of theoretical predictions primarily with Powheg+Pythia8 Monte-Carlo generator. Such study provides a unique opportunity to test of Standard Model at the TeV scale.
