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Title: Sensitivity and discovery potential of the proposed nEXO experiment to neutrinoless double- β decay

Journal Article · · Physical Review C
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We present that the next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double- β (0νββ) decay in 136Xe with a target half-life sensitivity of approximately 1028 yr using 5 × 103 kg of isotopically enriched liquid-xenon in a time projection chamber. This improvement of two orders of magnitude in sensitivity over current limits is obtained by a significant increase of the 136Xe mass, the monolithic and homogeneous configuration of the active medium, and the multiparameter measurements of the interactions enabled by the time projection chamber. Finally, the detector concept and anticipated performance are presented based upon demonstrated realizable background rates.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); Indiana Univ. Southeast, New Albany, IN (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
nEXO Collaboration
Grant/Contract Number:
AC05-76RL01830; AC52-07NA27344; SC0012704; SC0012191
OSTI ID:
1457768
Alternate ID(s):
OSTI ID: 1438206; OSTI ID: 1454377; OSTI ID: 1481202; OSTI ID: 1769100
Report Number(s):
PNNL-SA-130704; BNL-205698-2018-JAAM; DOE-IU-12191-1; LLNL-JRNL-737682; PRVCAN; TRN: US1901396
Journal Information:
Physical Review C, Vol. 97, Issue 6; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 116 works
Citation information provided by
Web of Science

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Cited By (10)

Design of a multiple-reflection time-of-flight mass spectrometer for barium-tagging journal August 2019
Required sensitivity in the search of neutrinoless double beta decay in 124Sn journal September 2019
Imaging individual barium atoms in solid xenon for barium tagging in nEXO journal April 2019
Partial cross section of neutron-induced reactions on 136 Xe at E n = 5 MeV for 0 νββ background studies journal November 2018
Double beta decay experiments: present and future journal November 2019
Exposure-background duality in the searches of neutrinoless double beta decay journal January 2020
Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects journal October 2018
Characterisation of Silicon Photomultipliers for liquid xenon detectors text January 2018
Search for Neutrinoless Double-Beta Decay with the Complete EXO-200 Dataset text January 2019
The Exposure-Background Duality in the Searches of Neutrinoless Double Beta Decay text January 2019

Figures / Tables (24)