Secular Equilibrium Assessment in a $\mathrm{CaWO}_4$ Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation
Instrumentation and Detectors
2023-01-25 v2 Instrumentation and Methods for Astrophysics
Abstract
CRESST is a leading direct detection sub- dark matter experiment. During its second phase, cryogenic bolometers were used to detect nuclear recoils off the target crystal nuclei. The previously established electromagnetic background model relies on secular equilibrium (SE) assumptions. In this work, a validation of SE is attempted by comparing two likelihood-based normalisation results using a recently developed spectral template normalisation method based on Bayesian likelihood. We find deviations from SE; further investigations are necessary to determine their origin.
Cite
@article{arxiv.2209.00461,
title = {Secular Equilibrium Assessment in a $\mathrm{CaWO}_4$ Target Crystal from the Dark Matter Experiment CRESST using Bayesian Likelihood Normalisation},
author = {G. Angloher and S. Banik and G. Benato and A. Bento and A. Bertolini and R. Breier and C. Bucci and J. Burkhart and L. Canonica and A. D'Addabbo and S. Di Lorenzo and L. Einfalt and A. Erb and F. v. Feilitzsch and N. Ferreiro Iachellini and S. Fichtinger and D. Fuchs and A. Fuss and A. Garai and V. M. Ghete and P. Gorla and S. Gupta and D. Hauff and M. Ješkovský and J. Jochum and M. Kaznacheeva and A. Kinast and H. Kluck and H. Kraus and A. Langenkämper and M. Mancuso and L. Marini and V. Mokina and A. Nilima and M. Olmi and T. Ortmann and C. Pagliarone and L. Pattavina and F. Petricca and W. Potzel and P. Povinec and F. Pröbst and F. Pucci and F. Reindl and J. Rothe and K. Schäffner and J. Schieck and D. Schmiedmayer and S. Schönert and C. Schwertner and M. Stahlberg and L. Stodolsky and C. Strandhagen and R. Strauss and I. Usherov and F. Wagner and M. Willers and V. Zema and F. Ferella and M. Laubenstein and S. Nisi},
journal= {arXiv preprint arXiv:2209.00461},
year = {2023}
}
Comments
Part of special issue: ICRM-LLRMT22 8th International Conference on Radionuclide Metrology - Low Level Radioactivity Measurement and Techniques, 6 pages, 3 figures