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Contact interaction in the nonrelativistic pion absorption operator

D. A. Zaikin·I. I. Osipchuk
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Abstract

Chirally invariant Lagrangian containing nucleon, pion and chiral scalar fields is considered. A consistent scheme is proposed for obtaining the nonrelativistic operator of pion absorption by NN-pair taking into account the chiral scalar exchange. An important role of the contact interaction is pointed out.D

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D. A. Zaikin, I. I. Osipchuk. 2004-06-07. Contact interaction in the nonrelativistic pion absorption operator. https://arxiv.org/abs/nucl-th/0406017

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