{"paper":{"title":"Prospects for observing the ${\\eta}_{t}$ ${\\to}$ $W^{+}W^{-}$ decay at the HL-LHC","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Bingbing Yang, Junfeng Sun, Yueling Yang","submitted_at":"2026-07-27T09:28:36Z","abstract_excerpt":"Motivated by the recent observation of the pseudoscalar toponium ${\\eta}_{t}$ at the LHC and by the ongoing interest in its properties, we phenomenologically investigate the ${\\eta}_{t}$ ${\\to}$ $W^{+}W^{-}$ process, one of the characteristic decays of toponium ${\\eta}_{t}$. The branching ratio for the ${\\eta}_{t}$ ${\\to}$ $W^{+}W^{-}$ decay is estimated with two scenarios of the decay constant $f_{{\\eta}_{t}}$. It is found that tens of dilepton events from the cascade decays, ${\\eta}_{t}$ ${\\to}$ $W^{+}W^{-}$ ${\\to}$ ${\\ell}^{-}\\bar{\\nu}_{\\ell}{\\ell}^{{\\prime}+}{\\nu}_{{\\ell}^{\\prime}}$ with $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.24203","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/2607.24203/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"}