Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons
We report a measurement of the B branching fraction based on 211fb-1 of data collected with the BABAR detector. We use samples of B0 and B+ mesons tagged by a second B meson reconstructed in a semileptonic or hadronic decay and combine the results assuming isospin symmetry to obtain B(B0-â., "+...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2006
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| _version_ | 1826261058203942912 |
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| author | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R |
| author_facet | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R |
| author_sort | Aubert, B |
| collection | OXFORD |
| description | We report a measurement of the B branching fraction based on 211fb-1 of data collected with the BABAR detector. We use samples of B0 and B+ mesons tagged by a second B meson reconstructed in a semileptonic or hadronic decay and combine the results assuming isospin symmetry to obtain B(B0-â., "+Î=(1.33±0.17stat±0.11syst)Ã-10-4. We determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element |Vub| by combining the partial branching fractions measured in ranges of the momentum transfer squared and theoretical calculations of the form factor. Using a recent lattice QCD calculation, we find |Vub|=(4.5±0. 5stat±0.3syst+0.7-0.5FF)Ã-10-3, where the last error is due to the normalization of the form factor. © 2006 The American Physical Society. |
| first_indexed | 2024-03-06T19:15:35Z |
| format | Journal article |
| id | oxford-uuid:183c784f-1c63-4dc1-a310-d094432f57f7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:15:35Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:183c784f-1c63-4dc1-a310-d094432f57f72022-03-26T10:42:18ZMeasurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesonsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:183c784f-1c63-4dc1-a310-d094432f57f7EnglishSymplectic Elements at Oxford2006Aubert, BBarate, RBona, MBoutigny, DCouderc, FKaryotakis, YLees, JPoireau, VTisserand, VZghiche, AGrauges, EPalano, AChen, JQi, NRong, GWang, PZhu, YEigen, GOfte, IStugu, BAbrams, GBattaglia, MBrown, DButton-Shafer, JCahn, RWe report a measurement of the B branching fraction based on 211fb-1 of data collected with the BABAR detector. We use samples of B0 and B+ mesons tagged by a second B meson reconstructed in a semileptonic or hadronic decay and combine the results assuming isospin symmetry to obtain B(B0-â., "+Î=(1.33±0.17stat±0.11syst)Ã-10-4. We determine the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element |Vub| by combining the partial branching fractions measured in ranges of the momentum transfer squared and theoretical calculations of the form factor. Using a recent lattice QCD calculation, we find |Vub|=(4.5±0. 5stat±0.3syst+0.7-0.5FF)Ã-10-3, where the last error is due to the normalization of the form factor. © 2006 The American Physical Society. |
| spellingShingle | Aubert, B Barate, R Bona, M Boutigny, D Couderc, F Karyotakis, Y Lees, J Poireau, V Tisserand, V Zghiche, A Grauges, E Palano, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Battaglia, M Brown, D Button-Shafer, J Cahn, R Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title | Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title_full | Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title_fullStr | Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title_full_unstemmed | Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title_short | Measurement of the B → nlv branching fraction and determination of |Vub| with tagged B mesons |
| title_sort | measurement of the b nlv branching fraction and determination of vub with tagged b mesons |
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