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

2017/10/31 by nEXO Collaboration, J. B. Albert, G. Anton +147 · 186 citations
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Detector #Double beta decay #Homogeneous #Neutrino Physics Research #Observatory #Projection (relational algebra) #Radioactive Decay and Measurement Techniques #Sensitivity (control systems) #nucl-ex #physics.ins-det

paper · pdf · doi:10.1103/physrevc.97.065503

published in Physical Review C 97(6) (American Institute of Physics) · v2 as published

openalex created_date 2016/06/24 · openalex publication_date 2018/06/15 · arxiv created 2018/10/19 · arxiv updated 2018/10/23 · openalex updated_date 2026/08/05

Abstract

The next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double-\ensuremathβ (0\ensuremathν\ensuremathβ\ensuremathβ) decay in ¹³⁶Xe with a target half-life sensitivity of approximately 10²⁸ yr using 5\ifmmode×\else\texttimes\fi10³ 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. The detector concept and anticipated performance are presented based upon demonstrated realizable background rates.

Citations

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Cited by

• Mitigation of backgrounds from cosmogenic 137 Xe in xenon gas experiments using 3 He neutron capture
• Simulation of charge readout with segmented tiles in nEXO
• nEXO: neutrinoless double beta decay search beyond 10 28 year half-life sensitivity
• Characterization of the Hamamatsu VUV4 MPPCs for nEXO
• Direct method for the quantitative analysis of surface contamination on ultra-low background materials from exposure to dust
• One-loop Type II seesaw neutrino model with stable dark matter candidates
• Search for Neutrinoless Double-βDecay with the Complete EXO-200 Dataset
• Tentative sensitivity of future 0νββ-decay experiments to neutrino masses and Majorana CP phases