Measurement of the top quark mass using the template method in the lepton plus jets channel with in situ W ---> j j calibration at CDF-II [report]

Jahred A. Adelman, J.F. Arguin, G. Bellettini, E. Brubaker, J. Budagov, G. Chlachidze, L. Demortier, A. Gibson, S. Kim, Y.K. Kim, T. Maruyama, K. Sato (+6 others)
2006 unpublished
We report an updated measurement of the top quark mass in the lepton plus jets channel of tt events from pp collisions at √ s = 1.96 TeV. This measurement uses a dataset with integrated luminosity of 680 pb −1 , containing 360 tt candidates separated into four subsamples. A top quark mass is reconstructed for each event by using energy and momentum constraints on the top quark pair decay products. We also employ the reconstructed mass of hadronic W boson decays W → jj to constrain in situ the
more » ... rgest systematic uncertainty of the top quark mass measurement: the jet energy scale. Monte Carlo templates of the reconstructed top quark and W boson mass are produced as a function of the true top quark mass and the jet energy scale. The distribution of reconstructed top quark and W boson mass in the data are compared to the Monte Carlo templates using a likelihood fit to obtain: Mtop =173.4 ± 2.8 GeV/c 2 .
doi:10.2172/899066 fatcat:wuxshdbg3vcjnfncqa3wmkol54