{"paper":{"title":"Measuring the Beam Polarizations and the Luminosity at Photon-Photon Colliders","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"I. Endo, I. Watanabe, J. Kodaira, Y. Yasui","submitted_at":"1992-12-28T17:16:34Z","abstract_excerpt":"We present methods to measure the beam polarizations and the luminosity of $\\gamma \\gamma$ colliders at TeV energy scale.\n  The beam polarizations of a $\\gamma \\gamma$ collider can easily be monitored by comparing the numbers of events of the processes $\\gamma \\gamma$ $\\rightarrow$ $\\ell^+ \\ell^-$ and $\\gamma \\gamma$ $\\rightarrow$ $W^+ W^-$, where $\\ell$ means $e$ or $\\mu$.\n  The luminosity of a $\\gamma \\gamma$ collider is also measurable by the event rate of $W$ boson pair productions and the light lepton pair productions."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9212312","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":""},"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"}