{"paper":{"title":"Effect of Delta potential on the pion-/pion+ ratio in heavy-ion collisions at intermediate energies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Gao-Chan Yong, Wei Zuo, Wen-Mei Guo","submitted_at":"2015-09-16T09:36:53Z","abstract_excerpt":"Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck(IBUU) transport model, effects of $\\Delta$ resonance potential on the free n/p and $\\pi^-/\\pi^+$ ratios in the central collision of $^{197}Au+^{197}Au$ at beam energies of 200 and 400 MeV/A are studied. It is found that the effect of $\\Delta$ potential on the ratio of pre-equilibrium free $n/p$ is invisible. The effect of $\\Delta$ isovector potential on the kinetic energy integrating ratio of $\\pi^-/\\pi^+$ may be observable only at lower incident beam energies and with stiffer symmetry energy. The strength of the $\\Delta$ isoscalar pot"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.04861","kind":"arxiv","version":2},"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"}