{"work":{"id":"4da9d592-e169-4ec8-9619-912e1c1809b5","openalex_id":null,"doi":null,"arxiv_id":"hep-ph/0109231","raw_key":null,"title":"QCD Matrix Elements + Parton Showers","authors":null,"authors_text":"S","year":2001,"venue":"hep-ph","abstract":"We propose a method for combining QCD matrix elements and parton showers in Monte Carlo simulations of hadronic final states in $e^+e^-$ annihilation. The matrix element and parton shower domains are separated at some value $y_{ini}$ of the jet resolution, defined according to the $k_T$-clustering algorithm. The matrix elements are modified by Sudakov form factors and the parton showers are subjected to a veto procedure to cancel dependence on $y_{ini}$ to next-to-leading logarithmic accuracy. The method provides a leading-order description of hard multi-jet configurations together with jet fragmentation, while avoiding the most serious problems of double counting. We present first results of an approximate implementation using the event generator APACIC++.","external_url":"https://arxiv.org/abs/hep-ph/0109231","cited_by_count":null,"metadata_source":"pith","metadata_fetched_at":"2026-05-22T22:32:12.863274+00:00","pith_arxiv_id":"hep-ph/0109231","created_at":"2026-05-10T21:52:55.662547+00:00","updated_at":"2026-05-22T22:32:12.863274+00:00","title_quality_ok":true,"display_title":"Catani, F","render_title":"Catani, F"},"hub":{"state":{"work_id":"4da9d592-e169-4ec8-9619-912e1c1809b5","tier":"hub","tier_reason":"10+ Pith inbound or 1,000+ external citations","pith_inbound_count":15,"external_cited_by_count":null,"distinct_field_count":2,"first_pith_cited_at":"2004-09-13T15:09:18+00:00","last_pith_cited_at":"2026-05-19T15:43:37+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":"2026-05-25T20:56:01.756434+00:00","tier_text":"hub"},"tier":"hub","role_counts":[{"context_role":"method","n":6},{"context_role":"background","n":2}],"polarity_counts":[{"context_polarity":"use_method","n":6},{"context_polarity":"background","n":2}],"runs":{},"summary":{},"graph":{},"authors":[]}}