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arxiv: 1911.02446 · v1 · pith:6OENTBDKnew · submitted 2019-11-06 · ⚛️ nucl-ex · physics.ins-det

First search for Lorentz violation in double beta decay with scintillating calorimeters

O. Azzolini , J.W. Beeman , F. Bellini , M. Beretta , M. Biassoni , C. Brofferio , C. Bucci , S. Capelli
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L. Cardani P. Carniti N. Casali D. Chiesa M. Clemenza O. Cremonesi A. Cruciani I. Dafinei S. Di Domizio F. Ferroni L. Gironi A. Giuliani P. Gorla C. Gotti G. Keppel M. Martinez S. Nagorny M. Nastasi S. Nisi C. Nones I. Nutini D. Orlandi L. Pagnanini M. Pallavicini L. Pattavina M. Pavan G. Pessina V. Pettinacci S. Pirro S. Pozzi E. Previtali A. Puiu C. Rusconi K. Schaffner C. Tomei M. Vignati A. Zolotarova
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classification ⚛️ nucl-ex physics.ins-det
keywords lorentzbetadecaydoublefirstlimitmathringobtained
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We present the search for Lorentz violation in the double beta decay of ^{82}Se~with CUPID-0, using an exposure of 9.95 kg x y. We found no evidence for the searched signal and set a limit on the isotropic components of the Lorentz violating coefficient of $\mathring{a}_{\text{of}}^{(3)} < 4.1\cdot10^{-6}$ GeV (90\% Credible Interval). This 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 $\mathring{a}_{\text{of}}^{(3)}$ obtained with a scintillating bolometer, showing the potentiality of this technique.

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