{"paper":{"title":"Single-spin asymmetry in dihadron production in SIDIS off the longitudinally polarized nucleon target","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Wei Yang, Xiaoyu Wang, Yongliang Yang, Zhun Lu","submitted_at":"2019-02-21T07:09:30Z","abstract_excerpt":"We study the single longitudinal-spin asymmetry of dihadron production in semi-inclusive deep inelastic scattering process. We consider the collinear picture in which the transverse momentum of the final-state hadron pair is integrated out, such that the $\\sin \\phi_R$ azimuthal asymmetry arises from the coupling $h_L\\, H_{1}^{\\sphericalangle}$ as well as the coupling $g_1 \\,\\widetilde{G}^{\\sphericalangle}$. We calculate the unknown twist-3 dihadron fragmentation function $\\widetilde{G}^{\\sphericalangle}$ using a spectator model which is successful in describing the dihadron production in the u"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.07889","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"}