Top quark physics with early data at ATLAS

par Dr Pamela Ferrari (ATLAS-NIKHEF)

vendredi 15 janv. 2010, 14:00 → 15:00 Europe/Paris

Auditorium M. Vivargent (LAPP)

In this talk I will discuss top physics at the ATLAS detector at LHC, concentrating on the physics measurements that can be done at the beginning of the data taking. At start-up, already with the first few hundreds pb-1 of integrated luminosity, a top quark signal can be clearly separated from the background even with an imperfectly calibrated detector. The determination of the ttbar production cross-section and the first evaluation of the top mass will be of fundamental importance. Furthermore, given their abundance, ttbar events can be used to calibrate and commission the detector. Particular attention will be given to data-driven methods to evaluate backgrounds and detection efficiencies for top analyses.

Slides 2010.01_PamelaFerrari_AtlasTop.pdf