{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/32091"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/32091","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Dº decays from e+e- collisions: precision, rare and substructure results","abstract":"Three analyses of D0 meson decays are presented which use the data collected with the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, Dº → K-π+πº, is carried out. The resulting Dalitz plot is well fi t by the inclusion of seven resonances, along with a non-resonant three body decay component. Finally a search for the radiative decays of the Dº meson is presented along with the four upper limits obtained.","abstract_html":"Three analyses of D0 meson decays are presented which use the data collected with the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, Dº → K-π+πº, is carried out. The resulting Dalitz plot is well fi t by the inclusion of seven resonances, along with a non-resonant three body decay component. Finally a search for the radiative decays of the Dº meson is presented along with the four upper limits obtained.","abstract_has_math":false,"creators":["Bergfeld, Timothy John"],"institution":null,"degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Selen, Mats A."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-06-28T22:59:03Z","date_published":"2012-06-28T22:59:03Z","updated_at":"2026-07-22T22:25:30Z","subjects":["D0 meson","CLEO II","Dº → K-π+πº"],"languages":["en"],"rights":["©2000 Bergfeld"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["Q. 539.72 Tc0b","FILM 2001 B453"],"render_values":[{"text":"Q. 539.72 Tc0b","href":null,"code":true},{"text":"FILM 2001 B453","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/32091","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Selen, Mats A."]},{"key":"dc:creator","label":"Author","values":["Bergfeld, Timothy John"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2012-06-28T22:59:03Z","10000-01-01","2000"]},{"key":"dc:type","label":"Dc Type","values":["Dissertation / Thesis","text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["D0 meson","CLEO II","Dº → K-π+πº"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["©2000 Bergfeld"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["Q. 539.72 Tc0b","FILM 2001 B453","http://hdl.handle.net/2142/32091"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Three analyses of D0 meson decays are presented which use the data collected with the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, Dº → K-π+πº, is carried out. The resulting Dalitz plot is well fi t by the inclusion of seven resonances, along with a non-resonant three body decay component. Finally a search for the radiative decays of the Dº meson is presented along with the four upper limits obtained.","Submitted by Rachelle Ramer (rramer2@illinois.edu) on 2012-06-28T22:59:03Z No. of bitstreams: 1 Bergfeld.pdf: 6304041 bytes, checksum: 17d026693cfa789c9312cfc4b47488ad (MD5)","Made available in DSpace on 2012-06-28T22:59:03Z (GMT). No. of bitstreams: 1 Bergfeld.pdf: 6304041 bytes, checksum: 17d026693cfa789c9312cfc4b47488ad (MD5) Previous issue date: 2000","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Rachelle Ramer (rramer2@illinois.edu) on 2012-06-28T22:59:03Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:10:51-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: thesis/dissertation","thesis/dissertation","U of I Only"]},{"key":"dc:title","label":"Title","values":["Dº decays from e+e- collisions: precision, rare and substructure results"]}]}],"canonical_facts":{"dc:contributor":["Selen, Mats A."],"dc:creator":["Bergfeld, Timothy John"],"dc:date":["2012-06-28T22:59:03Z","10000-01-01","2000"],"dc:description":["Three analyses of D0 meson decays are presented which use the data collected with the CLEO II detector at the Cornell Electron Storage Ring. First, a precision measurement of the ratio of the Dº → K-π+πº branching fraction to that of Dº → K-π+ is performed resulting in the best measurement to date. Second, a detailed high statistics study of the underlying resonant structure of the three body decay, Dº → K-π+πº, is carried out. The resulting Dalitz plot is well fi t by the inclusion of seven resonances, along with a non-resonant three body decay component. Finally a search for the radiative decays of the Dº meson is presented along with the four upper limits obtained.","Submitted by Rachelle Ramer (rramer2@illinois.edu) on 2012-06-28T22:59:03Z No. of bitstreams: 1 Bergfeld.pdf: 6304041 bytes, checksum: 17d026693cfa789c9312cfc4b47488ad (MD5)","Made available in DSpace on 2012-06-28T22:59:03Z (GMT). No. of bitstreams: 1 Bergfeld.pdf: 6304041 bytes, checksum: 17d026693cfa789c9312cfc4b47488ad (MD5) Previous issue date: 2000","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Rachelle Ramer (rramer2@illinois.edu) on 2012-06-28T22:59:03Z Item is restricted indefinitely.","Restriction data tranferred 2014-07-01T11:10:51-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: thesis/dissertation","thesis/dissertation","U of I Only"],"dc:identifier":["Q. 539.72 Tc0b","FILM 2001 B453","http://hdl.handle.net/2142/32091"],"dc:language":["en"],"dc:rights":["©2000 Bergfeld"],"dc:subject":["D0 meson","CLEO II","Dº → K-π+πº"],"dc:title":["Dº decays from e+e- collisions: precision, rare and substructure results"],"dc:type":["Dissertation / Thesis","text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."]},"updated_at":"2026-07-22T22:25:30Z"}