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