First search for Lorentz violation in double beta decay with scintillating calorimeters
We present the search for Lorentz violation in the double beta decay of 82Se with CUPID-0, using an
exposure of 9.95 kg × yr. We found no evidence for the searched signal and set a limit on the isotropic components of the Lorentz violating coefficient of a? ð3Þ < 4.1 × 10?6 GeV (90% credible interval). This of results is obtained with a Bayesian analysis of the experimental data and fully includes the systematic uncertainties of the model. This is the first limit on a? ð3Þ obtained with a scintillating bolometer, showing the of
potentiality of this technique