Microscopic derivation of pion-nucleon and pion-Delta scattering lengths
نویسنده
چکیده
A general expression for the π − N and π − ∆ scattering lengths is derived in the framework of a microscopic calculation. Annihilation, negative energy wavefunctions and spontaneous chiral symmetry are included consistently. The point-like limit is used to calculate the scattering lengths.
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