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

Abstract

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 y-quanta accompanying the production of multicharged fragments with Zz=5 and 6 have been analyzed. It is shown that in the fragment rest system there is an excess of 7-quanta with e~<40MeV over the background from known sources (re ~ 7 decays, bremsstrahlung and nuclear excitation).