{"paper":{"title":"$\\bar B^0 \\to \\pi^+ X$ in the Standard Model","license":"","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"C.-P. Kao (NTU), J.P. Ma (ITP), S. Pakvasa (Hawaii), X.-G. He (NTU)","submitted_at":"2002-06-06T06:29:39Z","abstract_excerpt":"In this paper we investigate the possibility of studying $B\\to \\pi$ form factor using the semi-inclusive decays $\\bar B^0 \\to \\pi^+ + X_q$. In general $B\\to PX$ semi-inclusive decays involve several hadronic parameters. But for $\\bar B^0 \\to \\pi^+ X_q$ decays we find that in the factorization approximation, the only unknown hadronic parameters are the form factors $F^{B\\to \\pi}_{0,1}$. Therefore these form factors can be studied in $\\bar B^0 \\to \\pi^+ X_q$ decays. Using theoretical model calculations for the form factors the branching ratios for $\\bar B^0 \\to \\pi^+ X_d(\\Delta S = 0) $ and $\\ba"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0206061","kind":"arxiv","version":2},"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"}