First experimental results from a photoreaction which confirm an existence of eta-mesic nuclei are discussed. The experiment was performed at the 1 GeV electron synchrotron of LPI. Two values of the end-point energy of the bremsstrahlung beam were used, 650 and 850 MeV (below and above eta-photoproduction threshold on the nucleon). Correlated pi+ n pairs flying from the 12C target were detected by two TOF scintillator spectrometers placed in opposite directions and transversely to the gamma beam. Measured energy spectra provide a strong evidence for a creation of eta-mesic nuclei as intermediate states of the reaction studied.
@article{arxiv.nucl-ex/0111020,
title = {Discovery of eta-mesic nuclei},
author = {G. A. Sokol and L. N. Pavlyuchenko},
journal= {arXiv preprint arXiv:nucl-ex/0111020},
year = {2007}
}
Comments
9 pages, 7 figures included. Talk of G.A.S. at the 10th Lomonosov Conference, August, Moscow. Conference style included