A search for the neutrinoless double-beta decay of 124 Sn was carried out using the tin-loaded liquid scintillator for an active source-detector technique. Tin (32.6%) in weight was successfully loaded into the liquid scintillator, and light output was as high as 57% of the unloaded liquid scintillator. A tin-loaded liquid scintillator with 1.1ℓ volume was installed at the 700 m underground laboratory in YangYang, and data were taken for 5285 h. No evidence for the 0 ν β β decay was found and a lower limit on the 124 Sn half-life was obtained to be 2.0 × 1019 year with 90% C.L. The new limit represents a significant improvement with respect to those previously available for 124 Sn.
|Number of pages||5|
|Publication status||Published - 2009 Jul|
Bibliographical noteFunding Information:
The author would like to thank V.I. Tretyak for his help in the simulation of detector efficiency using neutrinoless decay phase space. This work is supported by Korea Foundation Grant funded by Korea Government (MOEHRD, Basic Research Promotion Fund) (KRF-2005-070- C00034 ). We are grateful to the Korea Middle-land Power Co. Ltd., for their providing us with the underground laboratory space.
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics