Determination of Double Beta Decay Half-Life of 136Xe with the PandaX-4T Natural Xenon Detector.
Research (Wash D C)
; 2022: 9798721, 2022.
Article
en En
| MEDLINE
| ID: mdl-38645679
ABSTRACT
Precise measurement of two-neutrino double beta decay (DBD) half-life is an important step for the searches of Majorana neutrinos with neutrinoless double beta decay. We report the measurement of DBD half-life of 136Xe using the PandaX-4T dual-phase Time Projection Chamber (TPC) with 3.7-tonne natural xenon and the first 94.9-day physics data release. The background model in the fiducial volume is well constrained in situ by events in the outer active region. With a 136Xe exposure of 15.5 kg-year, we establish the half-life as 2.27 ± 0.03(stat.) ± 0.10(syst.) × 1021 years. This is the first DBD half-life measurement with natural xenon and demonstrates the physics capability of a large-scale liquid xenon TPC in the field of rare event searches.
Texto completo:
1
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Research (Wash D C)
Año:
2022
Tipo del documento:
Article
País de afiliación:
China