2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/131507The ATLAS and CMS experiments are now in their final installation phase and will be soon ready to study the physics of proton-proton collisions at the Large Hadron Collider. The LHC, by producing 2 $t\bar{t}$ events per second, will provide more than 8 million top events a year at start-up. In this paper, particular emphasis is given to the $t\bar{t}$ physics studies that can be performed at the beginning of the LHC running, with a limited amount of integrated luminosity ($\le$10 fb$^{-1}$).Proceedings of Moriond QCD 2007. Luminosity contribution to error on top pair production cross-section has been changed from 0.5% to 5.0%High Energy Physics - Experimenttext