Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 93: Neutrino physics without accelerators IV

T 93.4: Talk

Thursday, March 18, 2021, 16:45–17:00, Tr

Sensitivity of the DARWIN observatory to the neutrinoless double beta decay of ¹³⁶Xe — •Fabian Kuger for the DARWIN collaboration — Albert-Ludwigs-Universität, Freiburg, Germany

DARWIN

The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and other rare processes of nuclear or astrophysical origin. Its time projection chamber will instrument 40 t of natural liquid xenon containing about 3.6 t of ¹³⁶Xe. The combination of ultra low background levels, very good energy resolution and large target mass predestines DARWIN to search for the neutrionless double beta decay of ¹³⁶Xe.

We present a Monte Carlo simulation study of the background and event topologies resulting in a projected half-life sensitivity of 2.4 × 10²⁷ yr after 10 yr of DARWIN operation, a comparable science reach to dedicated double beta decay experiments using xenon targets enriched in ¹³⁶Xe.