Speaker
Description
The production of four top quarks ($t\bar{t}t\bar{t}$) was observed by the ATLAS and CMS experiments in 2023 and the cross section was measured to be slightly higher than the prediction from the Standard Model. This is an important process as it has sesntivity to the top quark yukawa coupling and new physics signals. Since the start of the LHC Run-3 in 2022 and until the end of 2024, the ATLAS detector has recorded $165fb^{-1}$ of data at an energy of 13.6TeV. The increased statistics and the higher centre-of-mass energy compared to the dataset used for the observation of the $t\bar{t}t\bar{t}$ process opens the possibility for differential measurements of this rare process. The talk will present work towards the first ATLAS differential measurement of $t\bar{t}t\bar{t}$ production, including reconstruction of the kinematics of the $t\bar{t}t\bar{t}$ system.