Freiburg 2008 – scientific programme

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T: Fachverband Teilchenphysik

T 34: Top-Physik III

T 34.7: Talk

Wednesday, March 5, 2008, 18:20–18:35, KGI-HS 1016

Top quark mass measurement using the decay length of b-hadrons — •Sergey Kalinin, Marina Davids, Markus Duda, Heiko Geenen, Wael Haj Ahmad, Thomas Hermanns, Oliver Pooth, Achim Stahl, Daiske Tornier, and Marc Zoeller — III. Physikalisches Institut B, Physikzentrum, D-52056 Aachen, Nordrhein-Westfalen

The method is based upon the mean decay length of b-hadrons in top quark events and can be sensitive to new physics. It is an alternative method to the kinematic reconstruction of the mass shape to measure the top quark mass. The dominant uncertainties of the method are not correlated with those in other methods. A preliminary estimation of the sensitivity for the CMS experiment is shown. The result can be combined with other measurements to substantially reduce the overall uncertainty.