CUSB (Columbia University-Stony Brook) was a particle detector at the Cornell Electron Storage Ring. CUSB, along with CLEO, discovered both the Υ(3S) and Υ(4S) meson resonances. They also produced studies of the photon transitions between the Upsilon states and B meson decays.
References
T. Bohringer et al. (CUSB Collaboration) (1980). "Observation of ϒ, ϒ′, and ϒ′′ at the Cornell Electron Storage Ring". Physical Review Letters. 44 (17): 1111–1114. Bibcode:1980PhRvL..44.1111B. doi:10.1103/PhysRevLett.44.1111. /wiki/Physical_Review_Letters ↩
G. Finocchiaro et al. (CUSB Collaboration) (1980). "Observation of the ϒ′′′ at the Cornell Electron Storage Ring". Physical Review Letters. 45 (4): 222–225. Bibcode:1980PhRvL..45..222F. doi:10.1103/PhysRevLett.45.222. /wiki/Physical_Review_Letters ↩