{"paper":{"title":"$K^{\\ast}(892)^0$ and $\\bar{K}^{\\ast}(892)^0$ production in central Pb+Pb, Si+Si, C+C and inelastic p+p collisions at 158$A$~GeV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"et al, NA49 collaboration: Tome Anticic","submitted_at":"2011-05-16T14:47:01Z","abstract_excerpt":"Production of the $K^{\\ast}(892)^0$ and $\\bar{K}^{\\ast}(892)^0$ resonances was studied via their $K^+ \\pi^-$ and $K^- \\pi^+$ decay modes in central Pb+Pb, Si+Si, C+C and inelastic p+p collisions at 158\\agev ($\\sqrt{s_{NN}}$ = 17.3 GeV) with the NA49 detector at the CERN SPS. Transverse momentum and rapidity distributions were measured and total yields were estimated. The yield of $K^{\\ast}$ exceeds that of $\\bar{K}^{\\ast}$ by about a factor of two in nucleus-nucleus reactions. The total yield ratios $< K^{\\ast} >/< K^+ >$ and $< \\bar{K}^{\\ast} >/< K^->$ are strongly suppressed in central Pb+Pb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.3109","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"}