Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons
We have measured the inclusive semileptonic branching fractions of D0, D+, and Ds+ mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 818pb-1 at ECM=3.774GeV, giving D0D̄0 and D+D- events, and 602pb -1 at ECM=4.170GeV, giving Ds*±Ds" events. We obtain B(D0→Xe+...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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2010
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| _version_ | 1797084127529271296 |
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| author | Asner, D Edwards, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Das, S Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J Patterson, JR Peterson, D |
| author_facet | Asner, D Edwards, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Das, S Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J Patterson, JR Peterson, D |
| author_sort | Asner, D |
| collection | OXFORD |
| description | We have measured the inclusive semileptonic branching fractions of D0, D+, and Ds+ mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 818pb-1 at ECM=3.774GeV, giving D0D̄0 and D+D- events, and 602pb -1 at ECM=4.170GeV, giving Ds*±Ds" events. We obtain B(D0→Xe+νe)=(6.46±0.09±0.11)%, B(D +→Xe+νe)=(16.13±0.10±0.29)%, and B(Ds+→Xe+νe)=(6.52±0.39±0.15)%, where the first uncertainties are statistical and the second are systematic. From these and lifetimes obtained elsewhere, we obtain the ratios of semileptonic decay widths Γ(D+→Xe+νe)/Γ(D0→Xe +νe)=0.985±0.015±0.024 and Γ(Ds+→Xe +νe)/Γ(D0→Xe+νe)=0.828±0. 051±0.025. The ratio of D+ and D0 is consistent with the isospin symmetry prediction of unity, and the ratio of Ds+ and D0 differs from unity, as expected. © 2010 The American Physical Society. |
| first_indexed | 2024-03-07T01:51:05Z |
| format | Journal article |
| id | oxford-uuid:9a1b0886-3ea5-43e3-a522-91673a794a67 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:51:05Z |
| publishDate | 2010 |
| record_format | dspace |
| spelling | oxford-uuid:9a1b0886-3ea5-43e3-a522-91673a794a672022-03-27T00:19:11ZMeasurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesonsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9a1b0886-3ea5-43e3-a522-91673a794a67EnglishSymplectic Elements at Oxford2010Asner, DEdwards, KReed, JRobichaud, ATatishvili, GWhite, EBriere, RVogel, HOnyisi, PRosner, JAlexander, JCassel, DDas, SEhrlich, RFields, LGibbons, LGray, SHartill, DHeltsley, BHunt, JKreinick, DKuznetsov, VLedoux, JPatterson, JRPeterson, DWe have measured the inclusive semileptonic branching fractions of D0, D+, and Ds+ mesons. For these measurements, we have used the full CLEO-c open-charm data samples, 818pb-1 at ECM=3.774GeV, giving D0D̄0 and D+D- events, and 602pb -1 at ECM=4.170GeV, giving Ds*±Ds" events. We obtain B(D0→Xe+νe)=(6.46±0.09±0.11)%, B(D +→Xe+νe)=(16.13±0.10±0.29)%, and B(Ds+→Xe+νe)=(6.52±0.39±0.15)%, where the first uncertainties are statistical and the second are systematic. From these and lifetimes obtained elsewhere, we obtain the ratios of semileptonic decay widths Γ(D+→Xe+νe)/Γ(D0→Xe +νe)=0.985±0.015±0.024 and Γ(Ds+→Xe +νe)/Γ(D0→Xe+νe)=0.828±0. 051±0.025. The ratio of D+ and D0 is consistent with the isospin symmetry prediction of unity, and the ratio of Ds+ and D0 differs from unity, as expected. © 2010 The American Physical Society. |
| spellingShingle | Asner, D Edwards, K Reed, J Robichaud, A Tatishvili, G White, E Briere, R Vogel, H Onyisi, P Rosner, J Alexander, J Cassel, D Das, S Ehrlich, R Fields, L Gibbons, L Gray, S Hartill, D Heltsley, B Hunt, J Kreinick, D Kuznetsov, V Ledoux, J Patterson, JR Peterson, D Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title | Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title_full | Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title_fullStr | Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title_full_unstemmed | Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title_short | Measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed-strange mesons |
| title_sort | measurement of absolute branching fractions of inclusive semileptonic decays of charm and charmed strange mesons |
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