A preliminary measurement of the quark-mixing parameter |Vcb| using the exclusive decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon tracks, combined with a Λc baryon. The ground state Λ0b → Λ+c μ−νμ is isolated by a fit to the Λb corrected mass spectrum. The raw yield NRaw(Λ0b → Λ+c μ−νμ) is corrected, and the semileptonic width ΓMeas. (Λ0b → Λ+c μ−νμ) is obtained. Lattice QCD calculations predict ΓTh.(Λ0b → Λ+c μ−νμ)/|Vcb|2. A comparison between the measured and predicted widths gives |Vcb| from the relative normalization. This method also provides a measurement of the branching fraction B(Λ0b → Λ+c μ−νμ) using well-measured properties of B-meson decays.
","abstract_html":"<p>A preliminary measurement of the quark-mixing parameter |Vcb| using the exclusive decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon tracks, combined with a Λc baryon. The ground state Λ0b → Λ+c μ−νμ is isolated by a fit to the Λb corrected mass spectrum. The raw yield NRaw(Λ0b → Λ+c μ−νμ) is corrected, and the semileptonic width ΓMeas. (Λ0b → Λ+c μ−νμ) is obtained. Lattice QCD calculations predict ΓTh.(Λ0b → Λ+c μ−νμ)/|Vcb|2. A comparison between the measured and predicted widths gives |Vcb| from the relative normalization. This method also provides a measurement of the branching fraction B(Λ0b → Λ+c μ−νμ) using well-measured properties of B-meson decays.</p>","abstract_has_math":false,"creators":["Ely, Scott Edward"],"institution":null,"degree_name":"Doctor of Philosophy (PhD)","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Artuso, Marina"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-07-01T07:00:00Z","date_published":"2022-07-01T07:00:00Z","updated_at":"2026-07-24T04:56:23Z","subjects":["CERN","CP Violation","Lambda_c Baryon","LHCb","Vcb","Physical Sciences and Mathematics","Physics"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://surface.syr.edu/etd/1552","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Artuso, Marina"]},{"key":"dc:creator","label":"Author","values":["Ely, Scott Edward"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"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":["Doctor of Philosophy (PhD)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["CERN","CP Violation","Lambda_c Baryon","LHCb","Vcb","Physical Sciences and Mathematics","Physics"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://surface.syr.edu/etd/1552"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["A preliminary measurement of the quark-mixing parameter |Vcb| using the exclusive decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon tracks, combined with a Λc baryon. The ground state Λ0b → Λ+c μ−νμ is isolated by a fit to the Λb corrected mass spectrum. The raw yield NRaw(Λ0b → Λ+c μ−νμ) is corrected, and the semileptonic width ΓMeas. (Λ0b → Λ+c μ−νμ) is obtained. Lattice QCD calculations predict ΓTh.(Λ0b → Λ+c μ−νμ)/|Vcb|2. A comparison between the measured and predicted widths gives |Vcb| from the relative normalization. This method also provides a measurement of the branching fraction B(Λ0b → Λ+c μ−νμ) using well-measured properties of B-meson decays.
"]},{"key":"dc:title","label":"Title","values":["Measurement of |vcb| Using the Semileptonic Decay Λb → Λcμνμ"]}]}],"canonical_facts":{"dc:contributor":["Artuso, Marina"],"dc:creator":["Ely, Scott Edward"],"dc:description.abstract":["A preliminary measurement of the quark-mixing parameter |Vcb| using the exclusive decay Λ0b→ Λ+c μ−νμ is presented. A sample of Λb semileptonic decays is provided by √s = 13TeV proton-proton collisions collected by the LHCb detector in 2017. Λ0b → Λ+c μ−νμX decays are identified from muon tracks, combined with a Λc baryon. The ground state Λ0b → Λ+c μ−νμ is isolated by a fit to the Λb corrected mass spectrum. The raw yield NRaw(Λ0b → Λ+c μ−νμ) is corrected, and the semileptonic width ΓMeas. (Λ0b → Λ+c μ−νμ) is obtained. Lattice QCD calculations predict ΓTh.(Λ0b → Λ+c μ−νμ)/|Vcb|2. A comparison between the measured and predicted widths gives |Vcb| from the relative normalization. This method also provides a measurement of the branching fraction B(Λ0b → Λ+c μ−νμ) using well-measured properties of B-meson decays.
"],"dc:identifier":["https://surface.syr.edu/etd/1552"],"dc:subject":["CERN","CP Violation","Lambda_c Baryon","LHCb","Vcb","Physical Sciences and Mathematics","Physics"],"dc:title":["Measurement of |vcb| Using the Semileptonic Decay Λb → Λcμνμ"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Doctor of Philosophy (PhD)"]},"updated_at":"2026-07-24T04:56:23Z"}