{"id":{"repo_id":"mit","oai_identifier":"oai:dspace.mit.edu:1721.1/46657"},"canonical_url":"https://search.dev.ndltd.org/etd/mit/oai:dspace.mit.edu:1721.1/46657","repository":{"repo_id":"mit","name":"MIT","base_url":"https://dspace.mit.edu/oai/request"},"display":{"title":"Search for D⁰-D̄⁰ mixing in D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays","abstract":"We present results of a search for D⁰-D̄⁰ mixing by analyzing D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays from events in 230.4 fb-1 e+e- data recorded by BABAR. Assuming CP conservation, we measure the time-integrated mixing rate RM = (0.0019 ... (stat.) ± 0.002 (syst.))%, and RM < 0.048% at 95% confidence. Using a frequentist method, we estimate that the data are consistent with no mixing at 4.3% confidence level. We present results both with and without the assumption of CP conservation.","abstract_html":"We present results of a search for D⁰-D̄⁰ mixing by analyzing D⁰ --&gt; K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays from events in 230.4 fb-1 e+e- data recorded by BABAR. Assuming CP conservation, we measure the time-integrated mixing rate RM = (0.0019 ... (stat.) ± 0.002 (syst.))%, and RM &lt; 0.048% at 95% confidence. Using a frequentist method, we estimate that the data are consistent with no mixing at 4.3% confidence level. We present results both with and without the assumption of CP conservation.","abstract_has_math":false,"creators":["Zheng, Yi, Ph. D. Massachusetts Institute of Technology"],"institution":"Massachusetts Institute of Technology","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":"Massachusetts Institute of Technology. Dept. of Physics.","school":null,"contributors":[],"advisors":["Richard K. Yamamoto."],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008","date_published":"2008","updated_at":"2026-07-22T22:21:43Z","subjects":["Physics."],"languages":["eng"],"rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"rights_urls":["http://dspace.mit.edu/handle/1721.1/7582"],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/1721.1/46657","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Richard K. Yamamoto."]},{"key":"dc:contributor.department","label":"Department","values":["Massachusetts Institute of Technology. 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They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://dspace.mit.edu/handle/1721.1/7582"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/1721.1/46657"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.","In title on title page, \"[pi]\" in all instances appears as the lower case Greel letter and \"-->\" appears as a right arrow.","Includes bibliographical references (leaves 97-98)."]},{"key":"dc:description.abstract","label":"Abstract","values":["We present results of a search for D⁰-D̄⁰ mixing by analyzing D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays from events in 230.4 fb-1 e+e- data recorded by BABAR. Assuming CP conservation, we measure the time-integrated mixing rate RM = (0.0019 ... (stat.) ± 0.002 (syst.))%, and RM < 0.048% at 95% confidence. Using a frequentist method, we estimate that the data are consistent with no mixing at 4.3% confidence level. We present results both with and without the assumption of CP conservation."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Ph.D."]},{"key":"dc:title","label":"Title","values":["Search for D⁰-D̄⁰ mixing in D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays"]}]}],"canonical_facts":{"dc:contributor.advisor":["Richard K. Yamamoto."],"dc:contributor.department":["Massachusetts Institute of Technology. Dept. of Physics."],"dc:contributor.other":["Massachusetts Institute of Technology. Dept. of Physics."],"dc:creator":["Zheng, Yi, Ph. D. Massachusetts Institute of Technology"],"dc:date.accessioned":["2009-08-26T17:14:19Z"],"dc:date.available":["2009-08-26T17:14:19Z"],"dc:date.issued":["2008"],"dc:description":["Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2008.","In title on title page, \"[pi]\" in all instances appears as the lower case Greel letter and \"-->\" appears as a right arrow.","Includes bibliographical references (leaves 97-98)."],"dc:description.abstract":["We present results of a search for D⁰-D̄⁰ mixing by analyzing D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays from events in 230.4 fb-1 e+e- data recorded by BABAR. Assuming CP conservation, we measure the time-integrated mixing rate RM = (0.0019 ... (stat.) ± 0.002 (syst.))%, and RM < 0.048% at 95% confidence. Using a frequentist method, we estimate that the data are consistent with no mixing at 4.3% confidence level. We present results both with and without the assumption of CP conservation."],"dc:description.degree":["Ph.D."],"dc:identifier.uri":["http://hdl.handle.net/1721.1/46657"],"dc:language.iso":["eng"],"dc:publisher":["Massachusetts Institute of Technology"],"dc:rights":["M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission."],"dc:rights.uri":["http://dspace.mit.edu/handle/1721.1/7582"],"dc:subject":["Physics."],"dc:title":["Search for D⁰-D̄⁰ mixing in D⁰ --> K⁺ [pi]⁻ [pi]⁻ [pi]⁺ decays"],"dc:type":["Thesis"]},"updated_at":"2026-07-22T22:21:43Z"}