Top Quark Mass Measurement using mT2 in the Dilepton Channel at CDF

Understand

We present measurements of the top quark mass using the \mT2, a variable related to the transverse mass in events with two missing particles.

• We use the template method applied to t\tbar dilepton events produced in p\pbar collisions at Fermilab's Tevatron and collected by the CDF detector.
• From a data sample corresponding to an integrated luminosity of 3.4 \invfb, we select 236 t\tbar candidate events.
• Using the \mT2 distribution, we measure the top quark mass to be M_{Top} = 168.0^{+4.8}_{-4.0} $\pm$ {2.9} GeV/c^{2}.