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dc.contributor.authorLai, I Chungen_US
dc.date.accessioned2014-03-14T21:15:29Z
dc.date.available2014-03-14T21:15:29Z
dc.date.issued1999-06-18en_US
dc.identifier.otheretd-070699-205010en_US
dc.identifier.urihttp://hdl.handle.net/10919/38697
dc.description.abstractUsing data recorded by the CLEO II detector operating at the Upsilon(4S) resonance at the Cornell Electron Storage Ring, several properties of B mesons are measured using a partially reconstructed tag of the decay mode bar{B0} -> D*+ l- bar{nu}. Using 2.38 fb**{-1} of on-resonance data and the averaged B meson semileptonic branching fraction through inclusive lepton momentum spectrum obtained by previous CLEO analysis, we measure the B0 and B- semileptonic branching fraction to be (10.78 +/- 0.60 +/- 0.69)% and (10.25 +/- 0.57 +/- 0.65)% respectively, which yields the lifetime ratio tau_+/tau_0 = 0.950 +0.117-0.080 +0.091-0.068, assuming the equality of semileptonic partial branching width for bar{B0} and B-. With a larger dataset of 3.1 fb**{-1}, we measured the B0-bar{B0} mixing parameter chi_d to be 0.189 +/- 0.019 +/- 0.006.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartlai-intro.pdfen_US
dc.relation.haspartlai-chapter6.pdfen_US
dc.relation.haspartlai-appendix.pdfen_US
dc.relation.haspartlai-chapter1.pdfen_US
dc.relation.haspartlai-chapter3.pdfen_US
dc.relation.haspartlai-references.pdfen_US
dc.relation.haspartlai-chapter5.pdfen_US
dc.relation.haspartlai-chapter4.pdfen_US
dc.relation.haspartlai-chapter2.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectMixingen_US
dc.subjectSemileptonic Decayen_US
dc.subjectB Mesonen_US
dc.titleMeasurement of bar{B0} Meson Properties Via Partial Reconstruction of the Decay bar{B0} -> D*+ l- ar{nu}en_US
dc.typeDissertationen_US
dc.contributor.departmentPhysicsen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplinePhysicsen_US
dc.contributor.committeememberChang, Lay Namen_US
dc.contributor.committeememberHeflin, James R.en_US
dc.contributor.committeememberPitt, Mark L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-070699-205010/en_US
dc.contributor.committeecochairKinoshita, Kayen_US
dc.contributor.committeecochairPiilonen, Leo E.en_US
dc.date.sdate1999-07-06en_US
dc.date.rdate2000-08-13
dc.date.adate1999-08-13en_US


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