Contribution of real and virtual Pions to nuclear Photoabsorption at Intermediate Energies

M. -Th. Huett; A. I. Milstein; M. Schumacher

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Contribution of real and virtual Pions to nuclear Photoabsorption at Intermediate Energies

M. -Th. Huett·A. I. Milstein·M. Schumacher

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Abstract

The universal curve $σ/A$ 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, $Δ$-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.

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M. -Th. Huett, A. I. Milstein, M. Schumacher. 1996-09-16. Contribution of real and virtual Pions to nuclear Photoabsorption at Intermediate Energies. https://arxiv.org/abs/nucl-th/9609037

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