Muon-induced backgrounds in the CUORICINO experiment
E. Andreotti, C. Arnaboldi, F. T. Avignone III, M. Balata, I. Bandac,, M. Barucci, J. W. Beeman, F. Bellini, T. Bloxham, C. Brofferio, A. Bryant, C., Bucci, L. Canonica, S. Capelli, L. Carbone, M. Carrettoni, M. Clemenza, O., Cremonesi, R. J. Creswick, S. Di Domizio
TL;DR
This study measures and limits the impact of cosmic ray muons on the CUORICINO experiment's background noise, using detectors and simulations to improve understanding of background sources in neutrinoless double beta decay searches.
Contribution
It provides the first direct measurement and upper limit of muon-induced background in CUORICINO, validated by comparison with Geant4 simulations.
Findings
Upper limit of 0.0021 counts/(keV kg yr) on muon-induced background
Good agreement between measurements and Geant4 simulations
Enhanced understanding of cosmic ray contributions to background noise
Abstract
To better understand the contribution of cosmic ray muons to the CUORICINO background, 10 plastic scintillator detectors were installed at the CUORICINO site and operated during the final 3 months of the experiment. From these measurements, an upper limit of 0.0021 counts/(keV kg yr) (95% CL) was obtained on the cosmic ray-induced background in the neutrinoless double beta decay region of interest. The measurements were also compared to Geant4 simulations.
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Taxonomy
TopicsNeutrino Physics Research · Astrophysics and Cosmic Phenomena · Dark Matter and Cosmic Phenomena