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The Nuclear Response in Delta-Isobar Region in the (3\!He,t) Reaction

V. F. Dmitriev

nucl-tharXiv:nucl-th/9212001

Abstract

The excitation of a Δ-isobar in a finite nucleus in charge--exchange (3\!He,t) reaction is discussed in terms of a nuclear response function. The medium effects modifying a Δ- and a pion propagation were considered for a finite size nucleus. The Glauber approach has been used for distortion of a 3\!He and a triton in the initial and the final states. The effects determining the peak positions and its width are discussed. Large displacement width for the Δ - h excitations and considerable contribution of coherent pion production were found for the reaction on 12C.

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