Photoproduction of the $πN$ pair on nuclei and isobar configurations

Details Photoproduction of the $πN$ pair on nuclei and isobar configurations Photoproduction of the $πN$ pair on nuclei and isobar configurations

2012-02-22

arxiv.org/abs/1202.4849v2

Physics

Nuclear Physics

Nuclear Theory

LaTeX 2e, 21 pages, 5 eps figures

Scientific paper

The model of the $\pi N$ pair photoproduction on the nuclei at the high momentum transfer was presented. The amplitude of the process $A(\gamma,\pi N)B$ was received by means of the extended impulse approximation, according to which nucleus, besides the nucleon components, includes also the delta-isobar degrees of freedom. One-particle operator of the transition was defined by amplitudes of the elementary processes $\gamma N\rightarrow\pi N$ and $\gamma \Delta\rightarrow\pi N$. The direct and exchange mechanisms of the reaction were analysed. The numerical estimations of the differential cross section of the $^{12}$C$(\gamma ,\pi^- p)^{11}$C and $^{12}$C$(\gamma ,\pi^+ p)^{11}$Be reactions were given.

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