Search for invisible decay of orthopositronium
Phys Rev Lett
.
1993 Apr 12;70(15):2265-2268.
doi: 10.1103/PhysRevLett.70.2265.
Authors
T Mitsui
,
R Fujimoto
,
Y Ishisaki
,
Y Ueda
,
Y Yamazaki
,
S Asai
,
S Orito
PMID:
10053517
DOI:
10.1103/PhysRevLett.70.2265
No abstract available