Details

Autor(en) / Beteiligte

• Bernabei, R.
• Belli, P.
• Cappella, F.
• Cerulli, R.
• Dai, C. J.
• d’Angelo, A.
• d’Angelo, S.
• Di Marco, A.
• He, H. L.
• Incicchitti, A.
• Ma, X. H.
• Montecchia, F.
• Sheng, X. D.
• Wang, R. G.
• Ye, Z. P.

Titel

Search for charge non-conserving processes in 127I by coincidence technique

Ist Teil von

• The European physical journal. C, Particles and fields, 2012-03, Vol.72 (3), p.1-6, Article 1920

Ort / Verlag

Berlin/Heidelberg: Springer-Verlag

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• New lifetime limits on the charge non-conserving (CNC) electron capture with excitation of the 417.9 keV nuclear level in the 127 I are established by using the coincidence technique. The analysed exposure is 0.87 ton × yr, collected deep underground at the Gran Sasso National Laboratory of the INFN by the highly radiopure DAMA/LIBRA setup (≈250 kg of highly radiopure NaI(Tl)). The new limit on the mean life is τ >1.2×10 24  yr (90 % C.L.), about one order of magnitude larger than those previously available for CNC electron capture involving nuclear level excitations of 127 I and of the same order of magnitude than those achieved for analogous processes in 129 Xe.