{"work":{"id":"d3918c5e-a56d-4958-85cd-eb416703e906","openalex_id":null,"doi":null,"arxiv_id":"hep-ph/9306320","raw_key":null,"title":"Heavy Quark Symmetry","authors":null,"authors_text":"M","year":1993,"venue":"hep-ph","abstract":"We review the current status of heavy quark symmetry and its applications to weak decays of hadrons containing a single heavy quark. After an introduction to the underlying physical ideas, we discuss in detail the formalism of the heavy quark effective theory, including a comprehensive treatment of symmetry breaking corrections. We then illustrate some nonperturbative approaches, which aim at a dynamical, QCD-based calculation of the universal form factors of the effective theory. The main focus is on results obtained using QCD sum rules. Finally, we perform an essentially model-independent analysis of semileptonic $B$ meson decays in the context of the heavy quark effective theory.","external_url":"https://arxiv.org/abs/hep-ph/9306320","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-07-08T02:44:27.855369+00:00","pith_arxiv_id":"hep-ph/9306320","created_at":"2026-05-10T21:55:50.259475+00:00","updated_at":"2026-07-08T02:44:27.855369+00:00","title_quality_ok":false,"display_title":"Heavy Quark Symmetry","render_title":"Heavy Quark Symmetry"},"hub":{"state":{"work_id":"d3918c5e-a56d-4958-85cd-eb416703e906","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":19,"external_cited_by_count":null,"distinct_field_count":5,"first_pith_cited_at":"2020-05-30T06:52:02+00:00","last_pith_cited_at":"2026-07-07T17:42:09+00:00","author_build_status":"not_needed","summary_status":"needed","contexts_status":"needed","graph_status":"needed","ask_index_status":"not_needed","reader_status":"not_needed","recognition_status":"not_needed","updated_at":"2026-08-20T23:39:40.853724+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"background","n":12}],"polarity_counts":[{"context_polarity":"background","n":12}],"runs":{},"summary":{},"graph":{},"authors":[]}}