New lifetime limits on the charge non-conserving (CNC) electron capture with excitation of the 417.9 keV nuclear level in the 127I 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 isτ >1.2×1024 yr (90 % C.L.), about one order of magnitude larger than those previously available for CNC electron capture involving nuclear level excitations of 127I and of the same order of magnitude than those achieved for analogous processes in 129Xe.

Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.j., D’Angelo, A., et al. (2012). Search for charge non-conserving processes in 127I by coincidence technique. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72, 1920-1-1920-6 [DOI 10.1140/epjc/s10052-012-1920-6].

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

BERNABEI, RITA;D'ANGELO, SILIO;MONTECCHIA, FRANCESCO;
2012-01-01

Abstract

New lifetime limits on the charge non-conserving (CNC) electron capture with excitation of the 417.9 keV nuclear level in the 127I 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 isτ >1.2×1024 yr (90 % C.L.), about one order of magnitude larger than those previously available for CNC electron capture involving nuclear level excitations of 127I and of the same order of magnitude than those achieved for analogous processes in 129Xe.
2012
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/04 - FISICA NUCLEARE E SUBNUCLEARE
Settore FIS/01 - FISICA SPERIMENTALE
English
Con Impact Factor ISI
underground physics,low background tecniques,charge conservation
Bernabei, R., Belli, P., Cappella, F., Cerulli, R., Dai, C.j., D’Angelo, A., et al. (2012). Search for charge non-conserving processes in 127I by coincidence technique. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 72, 1920-1-1920-6 [DOI 10.1140/epjc/s10052-012-1920-6].
Bernabei, R; Belli, P; Cappella, F; Cerulli, R; Dai, Cj; D’Angelo, A; D'Angelo, S; Di Marco, A; He, Hl; Incicchitti, A; Ma, Xh; Montecchia, F; Sheng, Xd; Wang, Rg; Ye, Zp
Articolo su rivista
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/61511
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 66
  • ???jsp.display-item.citation.isi??? 43
social impact