2000/11/04 by G. A. Sokol, T. A. Aibergenov, Sokol, G. A. +15
Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #nucl-ex
paper · pdf · doi:10.48550/arxiv.nucl-ex/0011005
9 pages, 8 figures. Talk given by G.A.S. at the IX Intern. Seminar "Electromagnetic Interactions of Nuclei at Low and Medium Energies", Sep 20-22, 2000, Moscow
arxiv created 2000/11/04 · arxiv updated 2009/12/01
First experimental results on photoproduction of eta-mesic nuclei are analyzed. In an experiment performed at the 1 GeV electron synchrotron of the Lebedev Physical Institute, correlated (pi+,n) pairs arising from the reaction γ+ C12 -> N + (A-1)eta -> N + (pi+,n) + (A-2) and flying transversely to the photon beam have been observed. When the photon energy exceeds the eta-meson production threshold, a distribution of the (pi+,n) pairs over their total energy is found to have a peak in the subthreshold region of the internal-conversion process eta p -> pi+ n which signals about formation of eta-mesic nuclei.