{"paper":{"title":"Matching Matrix Elements and Parton Showers with HERWIG and PYTHIA","arxiv_id":"hep-ph/0312274","primary_cat":"hep-ph","submitted_at":"2003-12-19T00:54:05+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13-20260917 on the question bank abstract-p1-20260923, exactly as returned. No sentence in this record was written by a language model.","schema":"pith.compiled-record/v0","status":"compiled","abstract":{"source":"arXiv listing abstract v1","sentences":[{"i":0,"p":1.0,"id":"s0","own":true,"role":"contribution","text":"We report on our exploration of matching matrix element calculations with the parton-shower models contained in the event generators HERWIG and Pythia.","hedge":{"p":0.9,"label":"asserted"},"own_p":0.91,"main_claim_p":0.09,"quantitative":false,"quantitative_p":0.04,"role_probabilities":{"gap":0.0,"method":0.0,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":1.0,"interpretation":0.0}},{"i":1,"p":0.94,"id":"s1","own":true,"role":"contribution","text":"We describe results for e+e- collisions and for the hadroproduction of W bosons and Drell--Yan pairs.","hedge":{"p":0.91,"label":"asserted"},"own_p":0.81,"main_claim_p":0.04,"quantitative":false,"quantitative_p":0.08,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.05,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.94,"interpretation":0.0}},{"i":2,"p":0.92,"id":"s2","own":true,"role":"method","text":"We compare methods based on (1) a strict implementation of ideas proposed by Catani, et al., (2) a generalization based on using the internal Sudakov form factors of HERWIG and Pythia, and (3) a simpler proposal of M. Mangano.","hedge":{"p":0.87,"label":"asserted"},"own_p":0.5,"main_claim_p":0.07,"quantitative":true,"quantitative_p":0.54,"role_probabilities":{"gap":0.0,"method":0.92,"result":0.0,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.08,"interpretation":0.0}},{"i":3,"p":0.49,"id":"s3","own":true,"role":"result","text":"Where appropriate, we show the dependence on various choices of scales and clustering that do not affect the soft and collinear limits of the predictions, but have phenomenological implications.","hedge":{"p":0.86,"label":"asserted"},"own_p":0.87,"main_claim_p":0.05,"quantitative":false,"quantitative_p":0.08,"role_probabilities":{"gap":0.0,"method":0.19,"result":0.49,"background":0.0,"limitation":0.01,"future_work":0.0,"contribution":0.25,"interpretation":0.06}},{"i":4,"p":0.41,"id":"s4","own":true,"role":"interpretation","text":"Finally, we comment on how to use these results to state systematic errors on the theoretical predictions.","hedge":{"p":0.49,"label":"unclear"},"own_p":0.59,"main_claim_p":0.11,"quantitative":false,"quantitative_p":0.03,"role_probabilities":{"gap":0.0,"method":0.02,"result":0.01,"background":0.0,"limitation":0.0,"future_work":0.32,"contribution":0.24,"interpretation":0.41}}]},"compiled":{"main_claim":{"p":0.42,"text":"Finally, we comment on how to use these results to state systematic errors on the theoretical predictions.","location":"abstract s4","hedge_strength":{"p":0.49,"label":"unclear"}},"provenance":{"route":{"via":"OpenRouter","model":"classifier-1.13","endpoint":"https://openrouter.ai/api/v1/systemone","provider":"TypeSafe"},"packing":"one request per paper","requests":1,"input_tokens":4327,"cost_usd_reported":0.000182},"compiled_at":"2026-09-23","bank_version":"abstract-p1-20260923","model_version":"classifier-1.13-20260917","abstract_states":{"claims_first":0.03,"states_limitation":0.35,"human_participants":0.01,"controlled_comparison":0.17,"randomized_assignment":0.01,"states_quantitative_result":0.04,"compares_with_prior_results":0.89,"mentions_code_or_data_availability":0.03},"evidential_basis":{"p":1.0,"value":"simulation or computation","probabilities":{"argument":0.0,"literature":0.0,"proof_or_derivation":0.0,"analysis_of_existing_data":0.0,"observation_or_experiment":0.0,"simulation_or_computation":1.0}},"contribution_type":{"p":0.82,"value":"simulation study","probabilities":{"review":0.0,"method_or_tool":0.18,"empirical_study":0.0,"simulation_study":0.82,"theoretical_result":0.0,"dataset_or_benchmark":0.0,"position_or_commentary":0.0}},"contribution_statement":{"p":0.65,"text":"We report on our exploration of matching matrix element calculations with the parton-shower models contained in the event generators HERWIG and Pythia.","location":"abstract s0"}},"coverage":{"tier":"abstract","levels_run":["P abstract"],"not_examined":["full text","figures and tables","references and citing sentences","relations to other papers"],"sources_read":["arXiv listing abstract v1"],"levels_not_run":["S sections","T body sentences","C citations","R cross-paper relations"],"sentences_examined":5,"sentences_in_abstract":5},"measured_accuracy":{"url":"https://pith.science/accuracy","measured_on":"2026-10-02","method":"two independent model families labelled a fresh random sample blind; the figure is how often the published label matches their consensus","sentence_role_agreement":0.92,"main_claim_agreement":0.908,"typed_citation_agreement":0.933,"typed_citation_agreement_95_interval":[0.917,0.945],"review_comments_accurate":0.758,"review_comments_accurate_95_interval":[0.684,0.82],"review_caught_admitted_error_found_or_related":0.448,"review_comments_judged":{"judged_by":["gpt-5.6-luna","grok-4.7"],"judged_against":"Pith's own text copy of each paper: text extracted from the PDF, the first 90,000 characters","measured_on":"2026-10-04","accurate":113,"decided":149,"sampled_reviews":200,"split_by_lane":false,"by_lane":"https://pith.science/accuracy#by-lane"}}}