{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/77413"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/77413","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Hadroproduction of Charmed Baryon Lambda ---&gt; Proton, Kaon, Pion","abstract":"Production of the charmed baryon $\\Lambda\\sb{\\rm c}$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5$\\sigma$ peak was seen in the decay mode $\\Lambda\\sbsp{\\rm c}{+}$ $\\to$ pK$\\sp-\\pi\\sp+$ (and charge congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $\\Lambda\\sbsp{\\rm c}{+}$ at $\\sqrt{s}$ = 33 GeV was measured to be $\\sigma$ $\\cdot$ BR = 2.1 $\\pm$ 1.1 ($\\pm$.74)$\\mu$b/nucleon for 0.028 $&lt;$ x$\\sb{f}$ $&lt;$ 0.226. The fraction of $\\Lambda\\sbsp{\\rm c}{+}$ / ($\\Lambda\\sbsp{\\rm c}{+}$ + $\\Lambda\\sbsp{\\rm c}{-}$) was estimated to be 78% $\\pm$ 18%.","abstract_html":"Production of the charmed baryon $\\Lambda\\sb{\\rm c}$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5<span class=\"etd-inline-math\">&sigma;</span> peak was seen in the decay mode $\\Lambda\\sbsp{\\rm c}{+}$ $\\to$ pK<span class=\"etd-inline-math\">\\sp-&pi;\\sp+</span> (and charge congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $\\Lambda\\sbsp{\\rm c}{+}$ at $\\sqrt{s}$ = 33 GeV was measured to be <span class=\"etd-inline-math\">&sigma;</span> $\\cdot$ BR = 2.1 $\\pm$ 1.1 ($\\pm$.74)<span class=\"etd-inline-math\">&mu;</span>b/nucleon for 0.028 $&amp;lt;$ x$\\sb{f}$ $&amp;lt;$ 0.226. The fraction of $\\Lambda\\sbsp{\\rm c}{+}$ / ($\\Lambda\\sbsp{\\rm c}{+}$ + $\\Lambda\\sbsp{\\rm c}{-}$) was estimated to be 78% $\\pm$ 18%.","abstract_has_math":true,"creators":["Filaseta, John Eugene"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-05-13T15:41:58Z","date_published":"2015-05-13T15:41:58Z","updated_at":"2026-07-22T22:26:10Z","subjects":["Physics, Nuclear"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(UMI)AAI8803038"],"render_values":[{"text":"(UMI)AAI8803038","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/77413","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Filaseta, John Eugene"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-05-13T15:41:58Z","10000-01-01","1987"]},{"key":"dc:type","label":"Dc Type","values":["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."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics, Nuclear"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/77413","(UMI)AAI8803038"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Production of the charmed baryon $\\Lambda\\sb{\\rm c}$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5$\\sigma$ peak was seen in the decay mode $\\Lambda\\sbsp{\\rm c}{+}$ $\\to$ pK$\\sp-\\pi\\sp+$ (and charge congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $\\Lambda\\sbsp{\\rm c}{+}$ at $\\sqrt{s}$ = 33 GeV was measured to be $\\sigma$ $\\cdot$ BR = 2.1 $\\pm$ 1.1 ($\\pm$.74)$\\mu$b/nucleon for 0.028 $&lt;$ x$\\sb{f}$ $&lt;$ 0.226. The fraction of $\\Lambda\\sbsp{\\rm c}{+}$ / ($\\Lambda\\sbsp{\\rm c}{+}$ + $\\Lambda\\sbsp{\\rm c}{-}$) was estimated to be 78% $\\pm$ 18%.","Made available in DSpace on 2015-05-13T15:41:58Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8803038.PDF: 4409177 bytes, checksum: 6ff208a610a1c8c53c38433f892d3439 (MD5) Previous issue date: 1987","Embargo set by: Seth Robbins for item 78624 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","144 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987."]},{"key":"dc:title","label":"Title","values":["Hadroproduction of Charmed Baryon Lambda ---&gt; Proton, Kaon, Pion"]}]}],"canonical_facts":{"dc:creator":["Filaseta, John Eugene"],"dc:date":["2015-05-13T15:41:58Z","10000-01-01","1987"],"dc:description":["Production of the charmed baryon $\\Lambda\\sb{\\rm c}$ has been observed in n-nucleus collisions at the Proton East area of FNAL. A 5$\\sigma$ peak was seen in the decay mode $\\Lambda\\sbsp{\\rm c}{+}$ $\\to$ pK$\\sp-\\pi\\sp+$ (and charge congugate). The lifetime was determined to be consistent with the current world average of 0.23 ps, and the cross section for $\\Lambda\\sbsp{\\rm c}{+}$ at $\\sqrt{s}$ = 33 GeV was measured to be $\\sigma$ $\\cdot$ BR = 2.1 $\\pm$ 1.1 ($\\pm$.74)$\\mu$b/nucleon for 0.028 $&lt;$ x$\\sb{f}$ $&lt;$ 0.226. The fraction of $\\Lambda\\sbsp{\\rm c}{+}$ / ($\\Lambda\\sbsp{\\rm c}{+}$ + $\\Lambda\\sbsp{\\rm c}{-}$) was estimated to be 78% $\\pm$ 18%.","Made available in DSpace on 2015-05-13T15:41:58Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 8803038.PDF: 4409177 bytes, checksum: 6ff208a610a1c8c53c38433f892d3439 (MD5) Previous issue date: 1987","Embargo set by: Seth Robbins for item 78624 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs","U of I Only","144 p.","Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1987."],"dc:identifier":["http://hdl.handle.net/2142/77413","(UMI)AAI8803038"],"dc:language":["eng"],"dc:subject":["Physics, Nuclear"],"dc:title":["Hadroproduction of Charmed Baryon Lambda ---&gt; Proton, Kaon, Pion"],"dc:type":["text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:26:10Z"}