{"paper":{"title":"Next-to-leading order Q^2-evolution of the transversity distribution h_1(x, Q^2)","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Hayashigaki, Y. Kanazawa, Yuji Koike (Niigata U.)","submitted_at":"1997-07-01T14:30:23Z","abstract_excerpt":"We present a calculation of the two-loop anomalous dimension for the transversity distribution h_1(x,Q^2), $\\gamma^{h(1)}_n$, in the MS scheme of the dimensional regularization. Due to the chiral-odd nature, h_1 does not mix with the gluon distributions, and thus our result is the same for the flavor-singlet and nonsinglet distributions. At small n (moment of h_1), $\\gamma^{h(1)}_n$ is significantly larger than $\\gamma^{f(1)}_n$ (the anomalous dimension for the nonsinglet f_1), but approaches $\\gamma^{f(1)}_n$ very quickly at large n, keeping the relation $\\gamma^{h(1)}_n > \\gamma^{f(1)}_n$. T"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9707208","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"}