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Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 7: Direkte Suche nach Dunkler Materie I

T 7.5: Talk

Monday, March 25, 2019, 17:05–17:20, H09

Beyond Dark Matter with the XENONnT Experiment — •Arianna Rocchetti — Uni-Freiburg

The XENON project seeks to directly detect dark matter in the form of Weakly Interacting Massive Particles (WIMPs) and it is now entering a new exciting phase: XENONnT, which will feature almost triple the target mass of xenon as well as decreased backgrounds. This will give XENONnT not only an unprecedented sensitivity to the WIMP-nucleon interaction cross section but also it will open the possibility to probe several other rare physics processes. Among these, the search for the neutrino-less double beta decay of 136Xe, which has a isotopic abundance of 8.49% in natural xenon. This decay channel has a Q-value of (2457.83 ± 0.37) keV, which is orders of magnitude greater than the expected dark matter signature, for which the detector is primarily optimized. We will present studies to improve the sensibility in the high energy region together with the modifications done in the data acquisition system in order to have a separate readout chain dedicated to these more energetic signals.

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