{"paper":{"title":"Doubly-heavy baryons, tetraquarks, and related topics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Alfredo Valcarce, Javier Vijande, Jean-Marc Richard","submitted_at":"2018-11-07T12:50:04Z","abstract_excerpt":"We review the physics of doubly-heavy baryons $QQq$ and tetraquarks $QQ\\bar q\\bar q$. For the latter, the stability is reached for large enough mass ratio $M/m$, even when spin forces and color mixing are neglected. It is thus customarily claimed that $bb\\bar q\\bar q$ in its ground state cannot decay into $b\\bar q+b\\bar q$. In some model, $cc\\bar u\\bar d$ is shown to be stable if color mixing and spin effects are properly taken into account. It is conjectured that some $bc\\bar q\\bar q'$ benefits from favorable adjustments of the gluon tubes in the confinement regime. Some recent studies of pen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02863","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"}