Göttingen 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
T: Fachverband Teilchenphysik
T 74: Experimentelle Methoden 1
T 74.5: Vortrag
Montag, 27. Februar 2012, 17:45–18:00, VG 0.111
Anti-Nuclei Identification using ToF at the Belle Experiment — •Diego Semmler, Wolfgang Kühn, Sören Lange, Matthias Ullrich, Milan Wagner, and Marcel Werner — Justus Liebig Universität, Gießen, Deutschland
The search for anti-nuclei (anti-deuterons, anti-3He, anti-tritons) in e+e− collisions at the Belle experiment is an ongoing longterm analysis project at Gießen. The standard identification via dE/dx (Bethe-Bloch formula) in the drift chamber has the disadvantage of a mass/charge ambiguity. We present result of a new identification technique calculating (a) the charge from dE/dx and ToF and (b) the mass from the momentum (via track curvature) and ToF. Background suppression by matching the charged drift chamber tracks with other detectors (e.g. Calorimeter or Cerenkov) will be presented as well.