{"paper":{"title":"Lorentz contraction, geometry and range in antiproton-proton annihilation into two pions","license":"","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"B. El-Bennich, W.M. Kloet","submitted_at":"2005-06-29T16:44:50Z","abstract_excerpt":"We present a geometric interpretation of the so-called annihilation range in reactions of the type $\\bar pp \\to$ {\\em two light mesons} based upon Lorentz effects in the highly relativistic final states ($\\gamma=E_{\\mathrm{cm}}/2mc^2\\simeq 6.8-8.0$). Lorentz-boosted meson wave functions, within the framework of the constituent quark model, result in a richer angular dependence of the annihilation amplitudes and thus in higher partial wave contributions ($J>1$) than usually obtained. This approach sheds some light on what could be a \"{\\em short}\" annihilation range and how it is influenced by t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0506084","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":""},"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"}