{"paper":{"title":"Reexamination of the role of the $\\Delta ^{\\ast}$ resonances in the $pp\\rightarrow nK^{+}\\Sigma ^{+}$ reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Ju-Jun Xie, Xiao-Yun Wang, Xu Cao, Xu-Rong Chen","submitted_at":"2014-12-16T07:12:59Z","abstract_excerpt":"In this work, the role of the $\\Delta ^{\\ast }$ resonances in the process of $pp\\rightarrow nK^{+}\\Sigma ^{+}$ are systematically investigated with the effective Lagrangian approach and the isobar model. We find that a $P_{31}$ state, either $\\Delta ^{\\ast }(1750)$ or $\\Delta ^{\\ast }(1910)$, is favored by the data while the $P_{33}$ state, namely $\\Delta ^{\\ast }(1920)$, has small contribution. Besides, either sub-threshold $S_{31}$ $\\Delta ^{\\ast }(1620)$ resonance or strong $n\\Sigma $ final state interaction or both have possible contribution at near threshold region, depending on the measu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1412.4895","kind":"arxiv","version":3},"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"}