Speaker
Description
The search for $0 \nu EC \beta^+$ of $^{120}$Te with CUORE
Alice Campani (on behalf of the CUORE collaboration)
Università degli studi di Genova – INFN
CUORE (Cryogenic Underground Observatory for Rare Events) is a ton-scale experiment located at the LNGS searching for neutrinoless double beta decay of $^{130}$Te. The detector consists of TeO$_2$ crystals operated as cryogenic calorimeters. The use of tellurium with natural isotopic composition allows us to search for the decay of other isotopes. The neutrinoless positron emitting electron capture of $^{120}$Te (natural abundance 0.09(1)%) has a clear signature from the 511-keV annihilation γ rays. We present an analysis of this process based on a new algorithm to perform the simultaneous spectral fit over five selected decay scenarios. Each scenario is characterized by a set of crystals simultaneously interested by a detectable energy release. We describe the blinded analysis we performed to model multi-site background structures and study the systematics.
| Collaboration name | CUORE |
|---|
