Top mass measurement in the lepton plus jets channel at CDF with a multivariate method

We present a preliminary measurement of the top quark mass using the Run II data collected with the CDF detector at Fermilab. The $t\bar{t}$\ events produced in $p\bar{p}$\ collisions at $\sqrt{s}$ = 1.96 TeV are reconstructed in the lepton+jets channel. Using a matrix element integration and transfer functions derived from Monte Carlo to connect jets to partons, we calculate a likelihood for each event to be a top candidate at several possible top masses. Taking into account the presence of background and using additional kinematic variables, we estimate a value for the top mass.