Determination of the strong coupling constant and test of asymptotic freedom from Transverse Energy-Energy Correlations in multijet events at $\sqrt{s} = 13$ TeV with the ATLAS detector

Measurements of transverse energy-energy correlations and their associated azimuthal asymmetries in multi-jet events are presented. The analysis is performed using a data sample containing 139 fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of $\sqrt{s} = 13$ TeV, collected with the ATLAS detector at the Large Hadron Collider. The measurements are presented in bins of the scalar sum of the transverse momenta of the two leading jets and unfolded to particle level. The unfolded distributions are fitted to next-to-leading-order perturbative QCD calculations. The agreement between data and theory is excellent, allowing a precision test of QCD at large momentum transfers. The strong coupling constant is extracted from these fits at different scale regimes. A global fit to the transverse energy-energy correlations yields a value of $\alpha_{\mathrm{s}}(m_Z) = 0.1196 \pm 0.0004 \ (\mathrm{exp.}) \ ^{+0.0072}_{-0.0105} \ (\mathrm{theo.})$