{"paper":{"title":"ZFITTER -- An Analytical Program for Fermion Pair Production in e+e- Annihilation","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Chizhov, A.D. Schaile, A. Gurtu, A. Olshevsky, A. Sazonov, D. Bardin, G. Mitselmakher, I. Sheer, J. Ridky, L. Vertogradov, M. Bilenky, M. Lokajicek, M. Sachwitz, O. Fedorenko, S. Ganguli, S. Riemann, T. Riemann, Yu. Sedykh","submitted_at":"1994-12-01T09:26:35Z","abstract_excerpt":"We describe how to use ZFITTER, a program based on a semi-analytical approach to fermion pair production in e+e- annihilation and Bhabha scattering. A flexible treatment of complete ${\\cal O}(\\alpha)$ QED corrections, also including higher orders, allows for three calculational {\\bf chains} with different realistic sets of restrictions in the photon phase space. {\\tt ZFITTER} consists of several {\\bf branches} with varying assumptions on the underlying hard scattering process. One includes complete ${\\cal O}(\\alpha)$ weak loop corrections with a resummation of leading higher-order terms. Alter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9412201","kind":"arxiv","version":3},"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/hep-ph/9412201/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"}