{"paper":{"title":"Probing a Heavy Dark $Z$ Boson at Multi-TeV Muon Colliders: Leveraging the Optimized Recoil Mass Technique","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Jeonghyeon Song, Jinheung Kim, kingman Cheung, Prasenjit Sanyal, Soojin Lee","submitted_at":"2025-01-04T08:06:44Z","abstract_excerpt":"We investigate the discovery potential of multi-TeV muon colliders for a heavy dark $Z$ boson ($Z_{\\rm D}$) with a mass above 1 TeV through the associated production channel $\\mu^+\\mu^- \\to Z_{\\rm D}\\gamma$. This process enables precise $M_{Z_{\\rm D}}$ reconstruction using the photon recoil mass ($m_{\\rm recoil}$). Focusing on the $Z_{\\rm D} \\to jjX$ and $Z_{\\rm D} \\to e^+e^-$ decay modes, we present strategies for achieving high sensitivity to the kinetic mixing parameter $\\varepsilon$ at 3, 6, and 10 TeV muon colliders with integrated luminosities of 1, 4, and 10 ab$^{-1}$ respectively, assu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.02224","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2501.02224/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"}