Measurement of the top quark mass in the lepton+jets channel at CDF using the template method

We report an updated measurement of the top quark mass with the CDF Run II detector at Fermilab. The measurement uses the lepton+jets channel to identify top quark pairs produced in proton-antiproton collisions at $\sqrt{s} = 1.96$\~TeV. We reconstruct a top quark mass in each event by using kinematic constraints on the pair of top quarks and their decay products for double b-tag, one b-tag, and no b-tag samples. The top quark mass is extracted by comparing the reconstructed mass distributions to Monte Carlo templates using a likelihood fit.