{"paper":{"title":"Charge-dependence of the $\\pi NN$ coupling constant and charge-dependence of the NN interaction","license":"","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"M. K. Banerjee, R. Machleidt","submitted_at":"1999-08-20T15:45:59Z","abstract_excerpt":"The recent determination of the charged $\\pi NN$ coupling constant, $g_{\\pi^\\pm}$, by the Uppsala Neutron Research Group implies that there may be considerable charge-splitting of the pion coupling constant. We investigate the consequences of this for the charge-independence breaking (CIB) of the $^1S_0$ scattering length, $\\Delta a_{CIB}$. We find that $\\Delta a_{CIB}$ depends sensitively on the difference between $g_{\\pi^\\pm}$ and the neutral $\\pi NN$ coupling constant, $g_{\\pi^0}$. Moreover, if $g^2_{\\pi^\\pm}$ is only about 3% larger than $g^2_{\\pi^0}$, then the established theoretical expl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9908066","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}