Threshold pi^0 photo- and electro-production in a meson-exchange model

Details Threshold pi^0 photo- and electro-production in a meson-exchange model Threshold pi^0 photo- and electro-production in a meson-exchange model

2003-12-27

arxiv.org/abs/nucl-th/0312117v1

Nucl.Phys. A737 (2004) 248-252

Physics

Nuclear Physics

Nuclear Theory

6 pages LATEX including 1 tables and 4 figures, uses espcrc1.sty

Scientific paper

We show that, within a meson-exchange dynamical model describing well most of the existing pion electromagnetic production data up to the second resonance region, one is also able to obtain a good agreement with the pi^0 photo- and electroproduction data near threshold. In the case of pi^0 production, the effects of final state interaction in the threshold region are nearly saturated by single charge exchange rescattering. This indicates that in ChPT, it might be sufficient to carry out the calculation just up to one-loop diagrams for threshold neutral pion production.

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