PoS - Proceedings of Science
Volume 380 - Particles and Nuclei International Conference 2021 (PANIC2021) - Neutrino physics
Status of $^{48}$Ca double beta decay search with CANDLES
S. Umehara*, K.I. Fushimi, T. Harada, A. Hashimoto, R. Hazama, T. Hiraiwa, T. Iga, T. IIda, Y. Kawashima, Y. Kishida, T. Kishimoto, K. Matsuoka, G. Miyoshi, Y. Muramatsu, K. Nakajima, M. Nomachi, I. Ogawa, A. Rittirong, T. Sakai, A. Sakaue, K. Suzuki, Y. Takihira, Y. Tamagawa, M. Tozawa, A. Yamamoto, S. Yoshida, T. Yoshida and A. Yoshiokaet al. (click to show)
Full text: pdf
Pre-published on: March 28, 2022
Published on:
Abstract
We have studied the neutrino-less double beta
decay(0$\nu\beta\beta$) of $^{48}$Ca
with the CANDLES III system, which consists of CaF$_{2}$(pure) scintillators.
The first result of $^{48}$Ca double beta decay with the CANDLES III system
was obtained by using 130.4 days of data.
In this measurement,
we achieved a background free measurement
and a low background condition of 10$^{-3}$ events/keV/yr/(kg of $^{\rm nat.}$Ca).
The sensitivity of this measurement, however, was limited by the small amount of $^{48}$Ca.
For a more sensitive measurement of $^{48}$Ca 0$\nu\beta\beta$,
we have developed new techniques for $^{48}$Ca enrichment
and CaF$_{2}$ scintillating bolometer.
In this paper, we will also show the current status of these techniques.
DOI: https://doi.org/10.22323/1.380.0291
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.