{"paper":{"title":"Centrality dependence of K+ produced in Pb+Pb collisions at 158 GeV per nucleon","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Bussiere, C. Baglin, G. Lehmann, H. P. Beck, J. P. Guillaud, J. Schacher, J. Tuominiemi, K. Borer, K. D. Lohmann, K. Elsener, K. Pretzl, M. Weber, NA52 collaboration: R. Arsenescu, Ph. Gorodetzky, R. Klingenberg, R. Mommsen, R. Spiwoks, S. Kabana, T. Linden, U. Moser","submitted_at":"2000-10-20T21:42:59Z","abstract_excerpt":"The NA52 collaboration searches for a discontinuous behaviour of charged kaons produced in Pb+Pb collisions at 158 A GeV as a function of the impact parameter, which could reveal a hadron to quark-gluon plasma (QGP) phase transition. The K+ yield is found to grow proportional to the number of participating ('wounded') nucleons N, above N=100. Previous NA52 data agree with the above finding and show a discontinuous behaviour in the kaon centrality dependence near N=100, marking the onset of strangeness enhancement -over e.g. p+A data at the same \\sqrt{s}- in a chemically equilibrated phase."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0010053","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"}