First experimental results on creation and decay of eta-mesic nuclei
Abstract
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 \gamma + 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.
Cite
@article{arxiv.nucl-ex/0011005,
title = {First experimental results on creation and decay of eta-mesic nuclei},
author = {G. A. Sokol and T. A. Aibergenov and A. V. Koltsov and A. V. Kravtsov and Yu. I. Krutov and A. I. L'vov and L. N. Pavlyuchenko and V. P. Pavlyuchenko and S. S. Sidorin},
journal= {arXiv preprint arXiv:nucl-ex/0011005},
year = {2007}
}
Comments
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