CXIV. Measurements of forty-four charged V-events

XLIV. Cloud chamber observations of negative heavy mesons

“…Buchanan et al (1954) found a similar limit by the direct study of negative charged V-events. An estimate of the mean lifetime of artificially produced negative K-mesons based on decays in flight is given by Goldhaber et al (1955) as (0.65k0.45) x lops sec, but Arnold et al (1 955 b) find evidence for a short-lived component among V--events not; due to hyperons.…”

LXVII. The production of hyperons and heavy mesons

“…¢~, and Cb are the angles that each plane of decay makes with the plane containing the lines of flight of the two V-particles. The momenta of the V-particles have been obtained by the metho.d described by Buchanan et al (1954). [n every case a lower limit to the momentum of the unstable particle ,could be set.…”