Accession Number : AD0641991

Title :   HIGH ENERGY PHYSICS WITH EMPHASIS ON STRANGE PARTICLES.

Descriptive Note : Final scientific rept.

Corporate Author : OSLO UNIV (NORWAY) INST OF PHYSICS

Report Date : 30 SEP 1966

Pagination or Media Count : 91

Abstract : A description is given of an investigation of the lambda hyperon production in negative-K captures at rest on complex nuclei in a heavy liquid bubble chamber filled with CF3Br. Main emphasis was put on a study of the lambda production in negative-K interactions which are not associated with the emission of charged or neutral pions, i.e. possible examples of negative-K captures on more than one nucleon. The total rate of lambda emission from negative-K captures in CF3 was estimated to (60 plus or minus 3)%. Lower and upper limits for the percentage of lambda hyperons produced in negative-K interactions on more than one nucleon were determined to (22 plus or minus 4)% and (40 plus or minus 3)% respectively. It was found that lambda hyperons are rarely produced directly in negative-K captures on pair of protons. The results of an investigation on hypernuclei produced by negative-K captures in nuclear emulsions are also reported. The reliability of a kinematic analysis method to identify the hypernuclei was examined by applying it to various categories of production and decay stars.

Descriptors :   (*STRANGE PARTICLES, PARTICLE TRAJECTORIES), (*V PARTICLES, PARTICLE TRAJECTORIES), (*K MESONS, MESON CAPTURE), (*MESON CAPTURE, HYPERONS), HALOGENATED HYDROCARBONS, NUCLEI, RADIOACTIVE DECAY, PROTONS, PIONS, NUCLEAR RADIATION SPECTROSCOPY, DECAY SCHEMES, PHOTOGRAPHIC EMULSIONS, NORWAY

Subject Categories : Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE