γ-production in peripheral interactions of relativistic carbon nuclei in propane and the anomalons problem

Peripheral interactions of 12C nuclei with protons and carbon nuclei have been investigated in a 2m propane bubble chamber at 4.2 GeV/c per nucleon. Energetic and angular characteristics of γ-quanta accompanying the production of multicharged fragments with Zsub(f)=5 and 6 have been analyzed. It is shown that in the fragment rest system there is an excess of γ-quanta with epsilonsub(γ)<40 MeV over the background from known sources (π0->2γ decays, bremsstrahlung and nuclear excition). (orig.)