{"id":"https://openalex.org/W2016100262","doi":"https://doi.org/10.1103/physrevlett.58.1328","title":"New precision measurement of the orthopositronium decay rate: A discrepancy with theory","display_name":"New precision measurement of the orthopositronium decay rate: A discrepancy with theory","publication_year":1987,"publication_date":"1987-03-30","ids":{"openalex":"https://openalex.org/W2016100262","doi":"https://doi.org/10.1103/physrevlett.58.1328","mag":"2016100262","pmid":"https://pubmed.ncbi.nlm.nih.gov/10034403"},"language":"en","primary_location":{"id":"doi:10.1103/physrevlett.58.1328","doi":"https://doi.org/10.1103/physrevlett.58.1328","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevlett.58.1328","pdf_url":null,"source":{"id":"https://openalex.org/S24807848","display_name":"Physical Review Letters","issn_l":"0031-9007","issn":["0031-9007","1079-7114","1092-0145"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-3","ki-jl-2","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review Letters","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5014017216","display_name":"Christoph Ira Westbrook","orcid":"https://orcid.org/0000-0002-6490-0468","observed_orcids":["https://orcid.org/0000-0002-6490-0468"]},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"C. I. Westbrook","raw_affiliation_strings":["Department of Physics, University of Michigan, Ann Arbor, Michigan 48109"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Michigan, Ann Arbor, Michigan 48109","institution_ids":["https://openalex.org/I27837315"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109010711","display_name":"David W. Gidley","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"D. W. Gidley","raw_affiliation_strings":["Department of Physics, University of Michigan, Ann Arbor, Michigan 48109"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Michigan, Ann Arbor, Michigan 48109","institution_ids":["https://openalex.org/I27837315"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108190915","display_name":"R. S. Conti","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R. S. Conti","raw_affiliation_strings":["Department of Physics, University of Michigan, Ann Arbor, Michigan 48109"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Michigan, Ann Arbor, Michigan 48109","institution_ids":["https://openalex.org/I27837315"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5113519493","display_name":"A. Rich","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"A. Rich","raw_affiliation_strings":["Department of Physics, University of Michigan, Ann Arbor, Michigan 48109"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physics, University of Michigan, Ann Arbor, Michigan 48109","institution_ids":["https://openalex.org/I27837315"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I27837315"],"apc_list":{"value":3750,"currency":"USD","value_usd":3750},"apc_paid":null,"fwci":7.192,"has_fulltext":false,"cited_by_count":82,"citation_normalized_percentile":{"value":0.9787234,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"58","issue":"13","first_page":"1328","last_page":"1331"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","score":0.8687000274658203,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10523","display_name":"Atomic and Molecular Physics","score":0.8687000274658203,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12579","display_name":"Muon and positron interactions and applications","score":0.05420000106096268,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10048","display_name":"Particle physics theoretical and experimental studies","score":0.030400000512599945,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/ortho-positronium","display_name":"ortho-positronium","score":0.9990000128746033},{"id":"https://openalex.org/keywords/vacuum-decay-rate","display_name":"vacuum decay rate","score":0.8989999890327454},{"id":"https://openalex.org/keywords/positronium-annihilation","display_name":"positronium annihilation","score":0.6480000019073486},{"id":"https://openalex.org/keywords/radiative-decay","display_name":"radiative decay","score":0.5099999904632568},{"id":"https://openalex.org/keywords/theory-experiment-discrepancy","display_name":"theory-experiment discrepancy","score":0.6100000143051147},{"id":"https://openalex.org/keywords/precision-measurement","display_name":"precision measurement","score":0.6980000138282776},{"id":"https://openalex.org/keywords/systematic-errors","display_name":"systematic errors","score":0.36800000071525574}],"concepts":[{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.7896716594696045},{"id":"https://openalex.org/C2778113609","wikidata":"https://www.wikidata.org/wiki/Q10897","display_name":"Lambda","level":2,"score":0.6283568143844604},{"id":"https://openalex.org/C184779094","wikidata":"https://www.wikidata.org/wiki/Q26383","display_name":"Atomic physics","level":1,"score":0.3714585602283478},{"id":"https://openalex.org/C109214941","wikidata":"https://www.wikidata.org/wiki/Q18334","display_name":"Particle physics","level":1,"score":0.36385658383369446},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.1977270543575287}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1103/physrevlett.58.1328","doi":"https://doi.org/10.1103/physrevlett.58.1328","is_oa":false,"landing_page_url":"https://doi.org/10.1103/physrevlett.58.1328","pdf_url":null,"source":{"id":"https://openalex.org/S24807848","display_name":"Physical Review Letters","issn_l":"0031-9007","issn":["0031-9007","1079-7114","1092-0145"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","jufo-3","ki-jl-2","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320261","host_organization_name":"American Physical Society","host_organization_lineage":["https://openalex.org/P4310320261"],"host_organization_lineage_names":["American Physical Society"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical Review Letters","raw_type":"journal-article"},{"id":"pmid:10034403","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/10034403","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Physical review letters","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W102617487","https://openalex.org/W1964615946","https://openalex.org/W1982966068","https://openalex.org/W2004754140","https://openalex.org/W2011529977","https://openalex.org/W2018343596","https://openalex.org/W2048778867","https://openalex.org/W2048878971","https://openalex.org/W2060134909","https://openalex.org/W2071476061","https://openalex.org/W2116659902","https://openalex.org/W2563807802","https://openalex.org/W2995438937","https://openalex.org/W4249091683"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2935759653","https://openalex.org/W3105167352","https://openalex.org/W54078636","https://openalex.org/W2954470139","https://openalex.org/W1501425562","https://openalex.org/W2902782467","https://openalex.org/W3084825885","https://openalex.org/W2298861036","https://openalex.org/W3148032049"],"abstract_inverted_index":{"The":[0],"vacuum":[1],"decay":[2],"rate,":[3],"${\\ensuremath{\\lambda}}_{\\mathrm{T}}$,":[4],"of":[5,44,54,64],"orthopositronium":[6],"(o-Ps),":[7],"formed":[8],"in":[9,46],"a":[10],"gas,":[11],"has":[12],"been":[13],"measured":[14],"to":[15,51],"be":[16],"${\\ensuremath{\\lambda}}_{\\mathrm{T}}$=7.0516\\ifmmode\\pm\\else\\textpm\\fi{}0.0013":[17],"\\ensuremath{\\mu}${\\mathrm{s}}^{\\mathrm{\\ensuremath{-}}1}$.":[18],"This":[19],"result,":[20],"which":[21],"is":[22,31],"4":[23],"times":[24],"more":[25],"accurate":[26],"than":[27],"any":[28],"previous":[29],"measurement,":[30],"ten":[32],"standard":[33],"deviations":[34],"above":[35],"the":[36,62],"theoretical":[37],"value.":[38],"Extensive":[39],"systematic":[40],"tests":[41],"included":[42],"measurement":[43],"${\\ensuremath{\\lambda}}_{\\mathrm{T}}$":[45],"3":[47],"different":[48,67],"gases,":[49],"each":[50],"an":[52],"accuracy":[53],"at":[55],"least":[56],"\\ifmmode\\pm\\else\\textpm\\fi{}0.0025":[57],"\\ensuremath{\\mu}${\\mathrm{s}}^{\\mathrm{\\ensuremath{-}}1}$":[58],"(350":[59],"ppm),":[60],"and":[61],"use":[63],"two":[65],"entirely":[66],"digital":[68],"timing":[69],"systems.":[70]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-14T16:39:01.820549","created_date":"2016-06-24T00:00:00"}
