Search for non-paulian transitions in Na-23 and I-127

Bernabei, R.; Belli, P.; Montecchia, F.; De Sanctis, M.; Di Nicolantonio, W.; Incicchitti, A.; Prosperi, D.; Bacci, C.; Dai, C.J.; Ding, L.K.

doi:10.1016/S0370-2693(97)00842-3

Search for non-paulian transitions in Na-23 and I-127

R. Bernabei
(
- Rome U., Tor Vergata and
- INFN, Rome2
)
,
P. Belli
(
- Rome U., Tor Vergata and
- INFN, Rome2
)
,
F. Montecchia
(
- Rome U., Tor Vergata and
- INFN, Rome2
)
,
M. De Sanctis
(
- Rome U. and
- INFN, Rome
)
,
W. Di Nicolantonio
(
- Rome U. and
- INFN, Rome
)

1997

6 pages

Published in:

Phys.Lett.B 408 (1997) 439-444

DOI:

10.1016/S0370-2693(97)00842-3

View in:

reference search137 citations

Citations per year

Abstract: (Elsevier)

A new search of non-paulian nuclear processes, i.e. processes normally forbidden by the Pauli exclusion principle, was carried out by determining an improved upper limit for the spontaneous emission rate of protons in 23 Na and 127 I. A large set-up of highly radiopure NaI(Tl) crystals was employed; it was placed deeply underground at the Gran Sasso National Laboratory of I.N.F.N. The upper limit on the unit time probability of non-paulian emission of protons with energy E p ⩾ 10 MeV is λ ⩽ 4.6 · 10 −33 s −1 . The corresponding limit on the relative strength ( δ 2 ) for the searched non-paulian transitions has been estimated to be δ 2 ≲ 1.0 · 10 −54 .

References(7)

Figures(0)