# IOP HEPP Particle Physics 2009

6-8 April 2009
University of Oxford
Europe/London timezone

## Top Quark Mass Measurement using Matrix Element Analysis Technique and Lepton + Jets Channel

6 Apr 2009, 16:15
15m
Martin Wood Lecture Theatre (University of Oxford)

### Speaker

Jacob Linacre (University of Oxford)

### Description

We present a top quark mass measurement using ttbar candidate events for the lepton+jets decay channel from ppbar collisions at 1.96 TeV at CDF. The top quark mass is extracted by employing an unbinned maximum likelihood method using per-event probability density functions calculated using signal (ttbar) and background (W+jets) matrix elements, as well as a set of parameterised jet-to-parton mapping functions. The likelihood function is maximised with respect to the top quark mass, the fraction of signal events, and the jet energy scale correction, which is constrained in-situ via the mass of the hadronic W boson.

### Primary author

Jacob Linacre (University of Oxford)

 Slides