{"paper":{"title":"Full One-loop Calculation of Neutralino Annihilation into Two Photons","license":"","headline":"","cross_cats":["astro-ph"],"primary_cat":"hep-ph","authors_text":"L. Bergstrom, P. Ullio","submitted_at":"1997-06-03T16:57:48Z","abstract_excerpt":"For the first time, a full one-loop calculation of the process $\\chi\\chi\\to 2\\gamma$ is performed, where $\\chi$ is the lightest neutralino in the minimal supersymmetric extension of the Standard Model. This process is of interest for dark matter detection, since it would give a sharp $\\gamma$ ray line with $E_\\gamma=m_\\chi$. We improve upon and correct published formulas, and give cross sections for supersymmetric models with $\\chi$ masses between 30 GeV and several TeV. We find a new contribution, previously neglected, which enhances the $2\\gamma$ rate for TeV higgsinos by up to an order of m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9706232","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/9706232/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"}