{"paper":{"title":"Light Scalar Top Quarks and Supersymmetric Dark Matter","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Djouadi (LPMT Montpellier), C. Boehm, M. Drees (TU Munchen)","submitted_at":"1999-11-26T18:01:04Z","abstract_excerpt":"A stable neutralino $\\chi_1^0$, assumed to be the lightest supersymmetric particle, is a favored particle physics candidate for the cosmological Dark Matter. We study co-annihilation of the lightest neutralino with the lighter scalar top quark $\\tilde{t}_1$. We show that for natural values of the neutralino mass, $\\lsim 300$ GeV, the $\\chi_1^0 - \\tilde{t}_1$ mass difference has to exceed $\\sim 10$ to 30 GeV if $\\chi_1^0$, is to contribute significantly to the Dark Matter. Scenarios with smaller mass splitting, where $\\tilde{t}_1$ is quite difficult to detect at collider experiments, are thus c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9911496","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/hep-ph/9911496/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}