A study of the 3He(γ, π+)3H cross section near threshold

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Abstract
The effects of contributions from pion momentum, Fermi momentum, and Δ-resonance terms on the 3He(γ,π+)3H cross section near threshold are investigated in this paper. The pion momentum terms are shown to give important corrections individually, but their combined effect gives results which are almost equivalent to previous simpler calculations. Using a simple nuclear model, the results agree well with recent experimental data.

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