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24 April 2024

» arxiv » nucl-ex/9907011

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Parameters of Fermi-motion from Quasielastic Backward Pion-Proton Scattering on Nuclei
B. M. Abramov ; S. A. Bulychjov ; I. A. Dukhovskoy ; A. I. Khanov ; Y. S. Krestnikov ; A. P. Krutenkova ; V. V. Kulikov ; M. A. Matsuk ; I. A. Radkevich ; E. N. Turdakina ;
Date:	19 Jul 1999
Subject:	nucl-ex
Affiliation:	ITEP
Abstract:	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.
Source:	arXiv, nucl-ex/9907011
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