{"paper":{"title":"Two-body non-leptonic heavy-to-heavy decays at NNLO in QCD factorization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Susanne Kr\\\"ankl (Siegen U.), Tobias Huber (Siegen U.), Xin-Qiang Li (Central China Normal U.)","submitted_at":"2016-06-09T09:53:43Z","abstract_excerpt":"We evaluate in the framework of QCD factorization the two-loop vertex corrections to the decays $\\bar{B}_{(s)}\\to D_{(s)}^{(\\ast)+} \\, L^-$ and $\\Lambda_b \\to \\Lambda_c^+ \\, L^-$, where $L$ is a light meson from the set $\\{\\pi,\\rho,K^{(\\ast)},a_1\\}$. These decays are paradigms of the QCD factorization approach since only the colour-allowed tree amplitude contributes at leading power. Hence they are sensitive to the size of power corrections once their leading-power perturbative expansion is under control. Here we compute the two-loop ${\\cal O}(\\alpha_s^2)$ correction to the leading-power hard "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02888","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"}