{"paper":{"title":"Probing entanglement and testing Bell inequality violation with $\\textrm{e}^{+}\\textrm{e}^{-} \\rightarrow \\tau^{+}\\tau^{-}$ at Belle II","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex","quant-ph"],"primary_cat":"hep-ph","authors_text":"Christian Veelken, Karl Ehat\\\"aht, Luca Marzola, Marco Fabbrichesi","submitted_at":"2023-11-29T11:39:05Z","abstract_excerpt":"We present a feasibility study to probe quantum entanglement and Belle inequality violation in the process $\\textrm{e}^{+}\\textrm{e}^{-} \\rightarrow \\tau^{+}\\tau^{-}$ at a center-of-mass energy of $\\sqrt{s} = 10.579$ GeV. The sensitivity of the analysis is enhanced by applying a selection on the scattering angle $\\vartheta$ in the $\\tau^{+}\\tau^{-}$ center-of-mass frame. We analyze events in which both $\\tau$ leptons decay to hadrons, using a combination of decay channels $\\tau^{-} \\rightarrow \\pi^{-}\\nu_{\\tau}$, $\\tau^{-} \\rightarrow \\pi^{-}\\pi^{0}\\nu_{\\tau}$, and $\\tau^{-} \\rightarrow \\pi^{-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.17555","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/2311.17555/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"}