PoS - Proceedings of Science
Volume 441 - XVIII International Conference on Topics in Astroparticle and Underground Physics (TAUP2023) - Neutrino Physics and Astrophysics
CDEX-300๐‚ program for $^{76}$Ge 0๐‚ ๐œท๐œท search
H.ย Ma*, W.ย Dai and L.ย Yang
Full text: pdf
Pre-published on: December 15, 2023
Published on: March 22, 2024
Searching for the neutrinoless double beta ($0\nu\beta\beta$) decay is a promising way to probe the Majorana nature of neutrinos and provide insight into beyond Standard Model physics which might solve the matter-antimatter asymmetry in our current Universe. The China Dark matter EXperiment (CDEX) collaboration is planning and constructing a next-generation $0\nu\beta\beta$ experiment (CDEX-300$\nu$) to search for the 0๐œˆ๐›ฝ๐›ฝ decay of $^{76}$Ge in China Jinping Underground Laboratory (CJPL). CDEX-300$\nu$ will use about 225 kg $^{76}$Ge enriched germanium detectors coupled with passive and active background suppression technologies to conduct a "background free" search for the $^{76}$Ge 0$\nu\beta\beta$ decay signal. The target $^{76}$Ge $0\nu\beta\beta$ decay half-life sensitivity of CDEX-300$\nu$ is 10$^{27}$ yr with one ton-yr exposure at a background level of 10$^{-4}$ counts/(kgยทkeVยทyr) in the signal region, corresponding to a effective neutrino mass of 28.5-68.0 meV ranging by the uncertainty of the nuclear matrix element. In this paper, we present $0\nu\beta\beta$ search efforts from CDEX and the preconceptual design of the CDEX-300$\nu$ experiment.
DOI: https://doi.org/10.22323/1.441.0200
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.