First 0 nu half-life limit from the Gotthard xenon time projection chamber
- 1 December 1991
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 17 (S) , S165-S172
- https://doi.org/10.1088/0954-3899/17/s/017
Abstract
A xenon time-projection-chamber (TPC) with an active volume of 207 liters has been built to study 0 nu and 2 nu double beta decay in 136Xe. The TPC has been installed in the Gotthard Tunnel Underground Laboratory, and is currently taking data with 5 atm of xenon enriched in 62.5% 136Xe. The first 166 hours of data are presented. Based on this data set, the authors deduce a half-life limit of T12/0 nu (0+ to 0+)>6.2*1021 years for the 0 nu mode, at a 90% CL.Keywords
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