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28 March 2024
 
  » arxiv » nucl-ex/0011005

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First experimental results on creation and decay of eta-mesic nuclei
G.A. Sokol ; T.A. Aibergenov ; A.V. Koltsov ; A.V. Kravtsov ; Yu.I. Krutov ; A.I. L’vov ; L.N. Pavlyuchenko ; V.P. Pavlyuchenko ; S.S. Sidorin ;
Date 4 Nov 2000
Subject nucl-ex
AffiliationLebedev Institute, Moscow
AbstractFirst 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.
Source arXiv, nucl-ex/0011005
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