On rescattering effects in the reaction $π^- d \to π^- d$

Details On rescattering effects in the reaction $π^- d \to π^- d$ On rescattering effects in the reaction $π^- d \to π^- d$

2003-01-08

arxiv.org/abs/nucl-th/0301021v1

Phys.Atom.Nucl.67:743-747,2004; Yad.Fiz.67:764-768,2004

Physics

Nuclear Physics

Nuclear Theory

LaTeX, 7 pages, 2 eps figures, 1 table

Scientific paper

10.1134/1.1707135

We discuss rescattering corrections to the impulse approximation for the processes $\pi^- d\to\pi^- d$ and $\gamma d\to\pi^0 d$. It is shown that the rescattering effects (RE) give non-negligible contribution to the real part of these amplitudes. At the same time the contributions from the imaginary parts of impulse and rescattering corrections drastically cancel each other. This cancellation means that the processes $\pi^- d\to \pi^0 nn$ and $\gamma d\to \pi^+ nn / \pi^- pp$ are strongly suppressed near threshold as required by the Pauli principle.

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