Sensitivity of the DARWIN observatory to the neutrinoless double beta
decay of ¹³⁶Xe
decay of ¹³⁶Xe
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The DARWIN observatory is a proposed next-generation experiment to search for particle dark matter and for the neutrinoless double beta decay of 136Xe. Out of its 50 t total natural xenon inventory, 40 t will be the active target of a time projection chamber which thus contains about 3.6 t of 136Xe. Here, we show that its projected half-life sensitivity is 2.4×1027year, using a fiducial volume of 5 t of natural xenon and 10 year of operation with a background rate of less than 0.2 events/(t ⋅ year) in the energy region of interest. This sensitivity is based on a detailed Monte Carlo simulation study of the background and event topologies in the large, homogeneous target. DARWIN will be comparable in its science reach to dedicated double beta decay experiments using xenon enriched in 136Xe.
Date Issued
2020-09-02
Date Acceptance
2020-06-29
Citation
European Physical Journal C: Particles and Fields, 2020, 80
ISSN
1124-1861
Publisher
EDP Sciences
Journal / Book Title
European Physical Journal C: Particles and Fields
Volume
80
Copyright Statement
© The Author(s) 2020. Funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
License URL
Sponsor
Imperial College Trust
European Commission
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council
Science and Technology Facilities Council (STFC)
Identifier
http://arxiv.org/abs/2003.13407v1
Grant Number
PHAS_P50558
H2020-MSCA-RISE-2015-691164
ST/P000762/1
ST/S000372/1
ST-N000838
ST/N000838/1
Subjects
physics.ins-det
physics.ins-det
hep-ex
nucl-ex
Notes
11 pages, 8 figures
Publication Status
Published
Article Number
ARTN 808