Tajima, O;
Hayashii, H;
Hazumi, M;
Inami, K;
Iwasaki, Y;
Uehara, S;
Abe, K;
... Belle Collaboration; + view all
(2007)
Search for invisible decay of the Upsilon(1S).
PHYS REV LETT
, 98
(13)
, Article 132001. 10.1103/PhysRevLett.98.132001.