Wuppertal 2015 – scientific programme

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T: Fachverband Teilchenphysik

T 7: Dunkle Materie I

T 7.3: Talk

Monday, March 9, 2015, 14:35–14:50, I.13.65 (HS 26)

Status of the 2D Bayesian analysis of XENON100 data — •Stefan Schindler — JGU, Staudingerweg 7, 55128 Mainz

The XENON100 experiment is located in the underground laboratory at LNGS in Italy. Since Dark Matter particles will only interact very rarely with normal matter, an environment with ultra low background, which is shielded from cosmic radiation is needed. The standart analysis of XENON100 data has made use of the profile likelihood method (a frequentist approach) and still provides one of the most sensitive exclusion limits to WIMP Dark Matter.

Here we present work towards a Bayesian approach to the analysis of XENON100 data, where we attempt to include the measured primary (S1) and secondary (S2) scintillation signals in a more complete way. The background and signal models in the S1-S2 space have to be defined and a corresponding likelihood function, describing these models, has to be constructed.