Abstract
Use of the effective Lagrangian incorporating both the scalar and pseudoscalar mesons gives a possibility to calculate the ππ-scattering lengths without attraction of the ChPT theory.
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Shabalin, E.P. On the ππ-scattering lengths in the theory with effective Lagrangian. Phys. Atom. Nuclei 79, 212–215 (2016). https://doi.org/10.1134/S1063778816020162
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DOI: https://doi.org/10.1134/S1063778816020162