{"paper":{"title":"Role of a triangle singularity in the $\\gamma p\\rightarrow K^+ \\Lambda(1405)$ reaction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"En Wang, Eulogio Oset, Feng-Kun Guo, Ju-Jun Xie, Wei-Hong Liang","submitted_at":"2016-10-23T03:10:05Z","abstract_excerpt":"We show the effects of a triangle singularity mechanism for the $\\gamma p \\to K^+\\Lambda(1405)$ reaction. The mechanism has a $N^*$ resonance around 2030 MeV, which decays into $K^* \\Sigma$. The $K^*$ decays to $K^+ \\pi$, and the $\\pi \\Sigma$ merge to form the $\\Lambda(1405)$. This mechanism produces a peak around $\\sqrt{s} = 2110$ MeV, and has its largest contribution around cos$\\theta=0$. The addition of this mechanism to other conventional ones, leads to a good reproduction of ${\\rm d}\\sigma/{\\rm dcos}\\theta$ and the integrated cross section around this energy, providing a solution to a pro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.07117","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"}