New limit on neutrinoless double. beta. decay in sup 136 Xe with a time projection chamber

Journal Article · Mon Sep 02 00:00:00 EDT 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.1218· OSTI ID:5149667

Wong, H T; Boehm, F; Fisher, P; Gabathuler, K; Henrikson, H E; Imel, D A; Iqbal, M Z; Joergens, V; Mitchell, L W; O'Callaghan-Hay, B M; Thomas, J; Treichel, M; Vuilleumier, J; Vuilleumier, J ^[1]

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1. Norman Bridge Laboratory of Physics, California Institute of Technology, Pasedena, California (USA) Paul Scherrer Institute, 5232 Villigen (Switzerland) Institut de Physique, A.-L. Breguet 1, 2000 Neuchatel (Switzerland)

A xenon time projection chamber with an active volume of 207 L has been built to study neutrinoless double {beta} decay in {sup 136}Xe. Data were taken in the Gotthard Underground Laboratory, with 5 atm of xenon enriched to 62.5% in {sup 136}Xe. From 3380 h of data, no evidence has been found for the 0{nu} 0{sup +}{r arrow}0{sup +} transition. Half-life limits of {ital T}{sub 1/2}{sup 0{nu}}{gt}2.5(4.9){times}10{sup 23} yr in the mass-mechanism mode and {ital T}{sub 1/2}{sup 0{nu}}{gt}1.7(3.2){times}10{sup 23} yr in the right-handed-current mode, at the 90(68)% C.L., were derived. An upper limit for the Majorana neutrino mass parameter was deduced.

• OSTI ID: 5149667
• Journal Information: Physical Review Letters; (United States), Vol. 67:10; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRINOS
MASS
XENON 136
DOUBLE BETA DECAY
CALIBRATION
ENERGY SPECTRA
EXPERIMENTAL DATA
LIMITING VALUES
MEV RANGE 01-10
PARTICLE TRACKS
RESOLUTION
TIME PROJECTION CHAMBERS
BETA DECAY
BETA-MINUS DECAY
DATA
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONS
MASSLESS PARTICLES
MEV RANGE
NUCLEAR DECAY
NUCLEI
NUMERICAL DATA
SPECTRA
STABLE ISOTOPES
XENON ISOTOPES
651720* - Nuclear Properties & Reactions
A=90-149
Experimental