{"id":{"repo_id":"cornell","oai_identifier":"oai:ecommons.cornell.edu:1813/92"},"canonical_url":"https://search.dev.ndltd.org/etd/cornell/oai:ecommons.cornell.edu:1813/92","repository":{"repo_id":"cornell","name":"Cornell University","base_url":"https://ecommons.cornell.edu/server/oai/request"},"display":{"title":"SEARCH FOR THE RARE DECAY OF A B MESON TO A K MESON AND TWO NEUTRINOS","abstract":"We search for the exclusive decays B -> (K+,KS,K*+,K*0)nu nubar in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -> D(*)(npi) decay. No signals were observed so 90% confidence level upper limits were set at: B(B+ -> K+ nu nubar) < 6.1 ? 10?4, B(B0 -> KS nu nubar) < 2.3 ? 10?3, B(B+ -> K*+ nu nubar) < 2.0 ? 10?3, and B(B0 -> K*0 nu nubar) < 2.6 ? 10?3.","abstract_html":"We search for the exclusive decays B -&gt; (K+,KS,K*+,K*0)nu nubar in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -&gt; D(*)(npi) decay. No signals were observed so 90% confidence level upper limits were set at: B(B+ -&gt; K+ nu nubar) &lt; 6.1 ? 10?4, B(B0 -&gt; KS nu nubar) &lt; 2.3 ? 10?3, B(B+ -&gt; K*+ nu nubar) &lt; 2.0 ? 10?3, and B(B0 -&gt; K*0 nu nubar) &lt; 2.6 ? 10?3.","abstract_has_math":false,"creators":["Thayer, John Gregg"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2004,"date_issued":"2004-03-09T14:50:48Z","date_published":"2004-03-09T14:50:48Z","updated_at":"2026-07-24T01:49:00Z","subjects":["Particle Physics","Rare B Decays","Flavor Changing Neutral Currents"],"languages":["en_US"],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/1813/92","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Thayer, John Gregg"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2004-03-09T14:50:48Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2004-03-09T14:50:48Z"]},{"key":"dc:date.issued","label":"Date","values":["2004-03-09T14:50:48Z"]},{"key":"dc:type","label":"Dc Type","values":["dissertation or thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Particle Physics","Rare B Decays","Flavor Changing Neutral Currents"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en_US"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/1813/92"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["James Alexander: chair, Matthias Neubert, Lawrence Gibbons"]},{"key":"dc:description.abstract","label":"Abstract","values":["We search for the exclusive decays B -> (K+,KS,K*+,K*0)nu nubar in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -> D(*)(npi) decay. No signals were observed so 90% confidence level upper limits were set at: B(B+ -> K+ nu nubar) < 6.1 ? 10?4, B(B0 -> KS nu nubar) < 2.3 ? 10?3, B(B+ -> K*+ nu nubar) < 2.0 ? 10?3, and B(B0 -> K*0 nu nubar) < 2.6 ? 10?3."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["SEARCH FOR THE RARE DECAY OF A B MESON TO A K MESON AND TWO NEUTRINOS"]}]}],"canonical_facts":{"dc:creator":["Thayer, John Gregg"],"dc:date.accessioned":["2004-03-09T14:50:48Z"],"dc:date.available":["2004-03-09T14:50:48Z"],"dc:date.issued":["2004-03-09T14:50:48Z"],"dc:description":["James Alexander: chair, Matthias Neubert, Lawrence Gibbons"],"dc:description.abstract":["We search for the exclusive decays B -> (K+,KS,K*+,K*0)nu nubar in a sample of 9.7 million charged and neutral B meson decays recorded by the CLEO detector at the Y(4S)resonance. The technique was one of full event reconstruction where after electing a signal B candidate the remainder of the event is required to be consistent with a hadronic B -> D(*)(npi) decay. No signals were observed so 90% confidence level upper limits were set at: B(B+ -> K+ nu nubar) < 6.1 ? 10?4, B(B0 -> KS nu nubar) < 2.3 ? 10?3, B(B+ -> K*+ nu nubar) < 2.0 ? 10?3, and B(B0 -> K*0 nu nubar) < 2.6 ? 10?3."],"dc:format.mimetype":["application/pdf"],"dc:identifier.uri":["https://hdl.handle.net/1813/92"],"dc:language.iso":["en_US"],"dc:subject":["Particle Physics","Rare B Decays","Flavor Changing Neutral Currents"],"dc:title":["SEARCH FOR THE RARE DECAY OF A B MESON TO A K MESON AND TWO NEUTRINOS"],"dc:type":["dissertation or thesis"]},"updated_at":"2026-07-24T01:49:00Z"}