### THE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTEDTHE INTERACTION AND DECAY OF K$sup -$ MESONS IN PHOTOGRAPHIC EMULSION. PART I. GENERAL CHARACTERISTICS OF K$sup -$-INTERACTIONS AND ANALYSIS OF EVENTS IN WHICH A CHARGED $pi$-MESON IS EMITTED

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 Author Bhowmik, B. ♦ Evans, D. ♦ Falla, D. Source United States Department of Energy Office of Scientific and Technical Information Content type Text Language English
 Subject Keyword PHYSICS ♦ ABSORPTION ♦ ANGULAR DISTRIBUTION ♦ CHARGED PARTICLES ♦ DECAY ♦ EMISSION ♦ INTERACTIONS ♦ KAONS ♦ KAONS-MINUS ♦ MEASURED VALUES ♦ NUCLEAR EMULSIONS ♦ NUCLEAR REACTIONS ♦ PARTICLE TRACKS ♦ PIONS ♦ SIGMA PARTICLES ♦ SPECTRA Abstract A total of 3,480 K/sup -/-mesons were observed. Of these, 445 interact in flight, at a mean energy of 40 Mev and only their general characteristics were studied. Little difference was observed between the number of unstable charged particles ( SIGMA plus or minus -hyperons and pi plus or minus -mesons) in these interactions and those in the 3,035 interactions at rest. The 3,035 K/sup - /-interactions at rest were studied in detail. The results on those interactions in which pi -mesons are emitted are given. An estimate of the SIGMA -hyperon nuclear potential is based on the energy spectrum of pi -mesons emitted in the K/ sup -/-interactions in which the only charged particles emitted are a pi meson and a SIGMA -hyperon. A detailed examination of ihe angular distribution of 2- pronged events, and of the sign ratio of the pi -mesons, the prong distribution and energy release in all events led to an estimate of the probabilities of absorption of positive and negative SIGMA hyperons in the parent nucleus, and to a partition of the events between the various primary reactions. (auth) ISSN 00296341 Educational Use Research Learning Resource Type Article Publisher Date 1959-08-16 Publisher Department H.H. Wills Physical Lab., Bristol, Eng. Journal Nuovo Cimento Volume Number 13 Organization H.H. Wills Physical Lab., Bristol, Eng.