{"paper":{"title":"$\\eta-\\eta^{\\prime}$ Mixing Angle from Vector Meson Radiative Decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"T. N. Pham","submitted_at":"2010-05-31T12:30:30Z","abstract_excerpt":"The octet-singlet $\\eta -\\eta^{\\prime}$ mixing mass term could have a derivative $O(p^{2})$ term as found in recent analysis of the $\\eta -\\eta^{\\prime}$ system. This term gives rise to an additional momentum-dependent pole contribution which is suppressed by a factor $m_{\\eta}^{2}/m_{\\eta^{\\prime}}^{2}$ for $\\eta$ relative to the $\\eta^{\\prime}$ amplitude. The processes with $\\eta$ meson can then be described, to a good approximation, by the momentum-independent mixing mass term which gives rise to a new $\\eta -\\eta^{\\prime}$ mixing angle $\\theta_{P}$, like the old $\\eta -\\eta^{\\prime}$ mixin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1005.5671","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}