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Contribution of real and virtual Pions to nuclear Photoabsorption at Intermediate Energies | | M.-Th. Huett
; A.I. Milstein
; M. Schumacher
; | | Date: |
16 Sep 1996 | | Subject: | nucl-th | | Abstract: | The universal curve $sigma /A$ of nuclear photoabsorption is investigated within a Fermi gas model of nuclear matter. An energy range from pion threshold up to 400 MeV is considered. The interactions between nucleon, pion, $Delta $-isobar and photon are considered in the non-relativistic approximation with corrections of the order $1/M$ taken into account with respect to proton mass. Analytical expressions are obtained, in which the influence of nuclear correlations, two-nucleon contributions and relativistic corrections is studied explicitely. An extension of the model calculation to nucleon knock-out reactions is discussed. | | Source: | arXiv, nucl-th/9609037 | | Services: | Forum | Review | PDF | Favorites | |
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