Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
1999-07-19
Physics
Nuclear Physics
Nuclear Experiment
6 pages, 4 figures
Scientific paper
In experiment on the study of the quasielastic pion-proton scattering at large momentum transfer on nuclei the proton Fermi-momentum distributions have been analysed in plane-wave approximation for light nuclei $^6$Li, $^7$Li and $^{12}$C. It was found that, contrary to (e,e') experiments, that the oscillator model gives slightly better description of our data than the Fermi - gas model. But the values of parameters of the distributions obtained in our analysis are considerably smaller, than in (e,e') experiments. It gives evidence that the plane-wave approximation is not sufficient and more complicated theoretical models which take into account the effects of distortion of pion-nucleon amplitude in a nuclear medium are necessary for analysis of our data.
Abramov B. M.
Bulychjov S. A.
Dukhovskoy I. A.
Khanov A. I.
Krestnikov Y. S.
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