We investigate the possibility to measure the top quark mass using the collider variable $m_{ T2}$ at the LHC experiment. Monte Carlo studies of $m_{ T2}$ are performed with the events corresponding to the dilepton decays of $t\bar{ t}$ produced at the LHC with 10 $fb^{ -1}$ integrated luminosity. Our analysis suggests that the top quark mass can be determined by the $m_{ T2}$ variable alone with a good precision at the level of 1 GeV.
Categories: hep-ph