Construction, Pattern Recognition and Performance of the CLEO III LiF-TEA RICH Detector

We briefly describe the design, construction and performance of the LiF-Tea RICH detector built to identify charged particles in the CLEO III experiment. Excellent pion/kaon separation is demonstrated

The Cleo Rich Detector

We describe the design, construction and performance of a Ring Imaging Cherenkov Detector (RICH) constructed to identify charged particles in the CLEO experiment. Cherenkov radiation occurs in LiF crystals, both planar and ones with a novel ``sawtooth\u27\u27-shaped exit surface. Photons in the wavelength interval 135--165 nm are detected using multi-wire chambers filled with a mixture of methane gas and triethylamine vapor. Excellent pion/kaon separation is demonstrated

Search for eta(b) in the CLEO-II Upsilon(3S) and Upsilon(2S) data

We searched for η b via hindered M1 transitions Υ(3 S ) [arrow right] γη b and Υ(2 S ) [arrow right] γη b using CLEO-II data. No significant evidence for such transitions was found, and we set upper limits on the corresponding branching ratios that contradict many phenomenological estimates for the rates of these transitions