Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 106: Suche nach Dunkler Materie 2

T 106.3: Vortrag

Montag, 4. März 2013, 17:20–17:35, HSZ-103

Application of Bayesian methods to Dark Matter searches with XENON100 — •Stefan Schindler — Institute of Physics, Johannes Gutenberg-Universität, Mainz, Germany

The XENON100 experiment located in the LNGS underground lab in Italy, aims at the direct detection of WIMP dark matter (DM). It is currently the most sensitive detector for spin-independent WIMP-nucleus interaction. The DM analysis of XENON100 data is currently performed with a profile likelihood method after several cuts and data selection methods have been applied.

A different model for the statistical analysis of data is the Bayesian interpretation. In the Bayesian approach to probability a prior probability (state of knowledge) is defined and updated for new sets of data to reject or accept a hypothesis. As an alternative approach a framework is being developed to implement Bayesian reasoning in the analysis. For this task the "Bayesian Analysis Toolkit (BAT)" will be used. Different models have to be implemented to identify background and (if there is a discovery) signal. We report on the current status of this work.