Interactions and decays of K⁻-mesons: III. Analysis of the stars in flight

Journal Article · Mon Sep 01 04:00:00 EDT 1958 · Nuovo Cimento

DOI:https://doi.org/10.1007/BF02903119· OSTI ID:4300005

Eisenberg, Y.; Koch, W.; Lohrmann, E.; Nikolić, M.; Schneeberger, M.; Winzeler, H.

About 415 interactions of K/sup -/ mesons in flight with complex nuclei of the nuclear emulsion have been analyzed. Comparing the results with those obtained by Alvarez et al. from K⁻- free proton absorptions at rest, it is concluded that there is a significantly higher fraction of A hyperons produced directly through the reaction K⁻ + N -- LAMBDA + pi , for these stars in flight (average kinetic enengy of the interacting K mesons 86 Mev), than must be expected if one transfers the Alvarez results to compound nuclei assuming isotopic spin consenvation. If the fraction of directly produced LAMBDA 's increases with increasing Kenengy, one could expect also a real increase in the direct LAMBDA production in the K⁻ absorptions at rest in the nuclear emulsion, because of the Fernni motion of the nucleons. Other topics which are discussed are the energy spectrum and absorption probabilities of the pions and SIGMA hyperons and also the relative number of hyperfragments observed per LAMBDA hyperon produced. (auth)

• Research Organization: Univ. of Bern
• Sponsoring Organization: USDOE
• NSA Number: NSA-13-000314
• OSTI ID: 4300005
• Journal Information: Nuovo Cimento, Journal Name: Nuovo Cimento Journal Issue: 5 Vol. 9; ISSN 0029-6341
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
DECAY
HYPERFRAGMENTS
HYPERONS
INTERACTIONS
KAONS
LAMBDA PARTICLES
NUCLEAR EMULSIONS
NUCLEI
PARTICLE MODELS
PARTICLE TRACKS
PHYSICS AND MATHEMATICS
PIONS
PROTONS
SIGMA PARTICLES
SPECTRA