W Bozzoli, A Bussière, G Giacomelli, E Lesquoy… - Nuclear Physics B, 1979 - Elsevier
… long-lived particles 0" 10 -s sec), with charges + ~, ± 1, ±~3 and ± 2, produced in 200 GeV pN
collisions … Upper limits were obtained for the production of long-lived hadrons and leptons. …