# Europhysics Conference on High-Energy Physics 2011

Jul 20 – 27, 2011
Alpes Congrès - Alpexpo
Europe/Paris timezone

## Precise measurements of the top mass and direct measurement of the mass difference between top and antitop quarks at D0

Jul 21, 2011, 3:00 PM
30m
Stendhal (Universe)

### Stendhal

#### Universe

Parallel session talk Top and Electroweak Physics

### Speaker

Gianluca Petrillo (University of Rochester)

### Description

We report on measurements of the top quark mass using dilepton and lepton+jet data collected with the D0 detector. These results are compared to the top mass extracted from the $t\bar{t}$ cross section using higher-order quantum chromodynamics calculations. We also present a direct measurement of the mass difference between top and antitop quarks ($\Delta m$) in lepton+jets $t\bar{t}$ final states using the “matrix element” method.

### Primary author

Dr Marco VERZOCCHI (Fermilab)

### Presentation materials

 Transparents