Top quark mass measurement using the template method at CDF.

Abstract

We present a measurement of the top quark mass in the lepton þ jets and dilepton channels of tt decays using the data sample corresponding to an integrated luminosity of 5:6 fb1 of pp collisions at Tevatron with ffiffiffis p ¼ 1:96 TeV, collected with the CDF II detector. We construct templates of two reconstructed top quark masses from different jets-to-quarks combinations and the invariant mass of two jets from the W decays in the lepton þ jets channel, and a reconstructed top quark mass and mT2, a variable related to the transverse mass in events with two missing particles, in the dilepton channel. The simultaneous fit of the templates from signal and background events in the lepton þ jets and dilepton channels to the data yields a