{"paper":{"title":"Status of the lower spins in the Rarita-Schwinger four-vector spinor $\\psi_\\mu$ within the method of the combined Lorentz- and Poincar\\'e invariant projectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"E. G. Delgado-Acosta, M. Kirchbach, V. M. Banda-Guzm\\'an","submitted_at":"2013-07-04T18:34:29Z","abstract_excerpt":"We investigate the status of the lower spin-1/2 companions to spin-3/2 within the four-vector spinor, $\\psi_\\mu$. According to its reducibility, $\\psi_\\mu\\longrightarrow \\left[(1/2,1)\\oplus (1,1/2)\\right]\\oplus [(1/2,0)\\oplus (0,1/2)]$ this representation space contains two spin-1/2 sectors, the first one transforming as a genuine Dirac-spinor, $(1/2,0)\\oplus (0,1/2)$, and the second as the companion to spin-3/2 in $(1/2,1)\\oplus (1,1/2)$. In order to correctly identify the covariant spin-1/2 degrees of freedom in the Rarita-Schwinger field of interest we exploit the properties of the Casimir "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.1445","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"}