Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb|
We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| based on a sample of about 53 700 B̄0 → D*+ℓ-ν̄ℓ decays observed by the BABAR detector. We obtain the branching fraction averaged over ℓ = e, μ, B(B̄0 → D*+ℓ -ν̄ℓ) = (4.90 ± 0.07(stat.) -0.35+0.36(syst.))%. We measure the...
| 主要な著者: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| フォーマット: | Journal article |
| 言語: | English |
| 出版事項: |
2005
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| _version_ | 1826307030535634944 |
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| author | Aubert, B Barate, R Boutigny, D Couderc, F Gaillard, J Hicheur, A Karyotakis, Y Lees, J Tisserand, V Zghiche, A Palano, A Pompili, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Borgland, A Breon, AB Brown, D Button-Shafer, J |
| author_facet | Aubert, B Barate, R Boutigny, D Couderc, F Gaillard, J Hicheur, A Karyotakis, Y Lees, J Tisserand, V Zghiche, A Palano, A Pompili, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Borgland, A Breon, AB Brown, D Button-Shafer, J |
| author_sort | Aubert, B |
| collection | OXFORD |
| description | We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| based on a sample of about 53 700 B̄0 → D*+ℓ-ν̄ℓ decays observed by the BABAR detector. We obtain the branching fraction averaged over ℓ = e, μ, B(B̄0 → D*+ℓ -ν̄ℓ) = (4.90 ± 0.07(stat.) -0.35+0.36(syst.))%. We measure the differential decay rate as a function of w, the relativistic boost γ of the D*+ in the B̄0 rest frame. By extrapolating dΓ/dw to the kinematic limit w → 1, we extract the product of |V cb| and the axial form factor A1(w = 1). We combine this measurement with a lattice QCD calculation of A1(w = 1) to determine |Vcb) = (38.7 ± 0.3(stat.) ± 1.7(syst.) -1.3+1.5(theory)) × 10-3. © 2005 The American Physical Society. |
| first_indexed | 2024-03-07T06:56:53Z |
| format | Journal article |
| id | oxford-uuid:fe6fb8e2-42c5-49fa-97b4-07d7e417e399 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T06:56:53Z |
| publishDate | 2005 |
| record_format | dspace |
| spelling | oxford-uuid:fe6fb8e2-42c5-49fa-97b4-07d7e417e3992022-03-27T13:36:30ZMeasurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb|Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fe6fb8e2-42c5-49fa-97b4-07d7e417e399EnglishSymplectic Elements at Oxford2005Aubert, BBarate, RBoutigny, DCouderc, FGaillard, JHicheur, AKaryotakis, YLees, JTisserand, VZghiche, APalano, APompili, AChen, JQi, NRong, GWang, PZhu, YEigen, GOfte, IStugu, BAbrams, GBorgland, ABreon, ABBrown, DButton-Shafer, JWe present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| based on a sample of about 53 700 B̄0 → D*+ℓ-ν̄ℓ decays observed by the BABAR detector. We obtain the branching fraction averaged over ℓ = e, μ, B(B̄0 → D*+ℓ -ν̄ℓ) = (4.90 ± 0.07(stat.) -0.35+0.36(syst.))%. We measure the differential decay rate as a function of w, the relativistic boost γ of the D*+ in the B̄0 rest frame. By extrapolating dΓ/dw to the kinematic limit w → 1, we extract the product of |V cb| and the axial form factor A1(w = 1). We combine this measurement with a lattice QCD calculation of A1(w = 1) to determine |Vcb) = (38.7 ± 0.3(stat.) ± 1.7(syst.) -1.3+1.5(theory)) × 10-3. © 2005 The American Physical Society. |
| spellingShingle | Aubert, B Barate, R Boutigny, D Couderc, F Gaillard, J Hicheur, A Karyotakis, Y Lees, J Tisserand, V Zghiche, A Palano, A Pompili, A Chen, J Qi, N Rong, G Wang, P Zhu, Y Eigen, G Ofte, I Stugu, B Abrams, G Borgland, A Breon, AB Brown, D Button-Shafer, J Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title | Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title_full | Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title_fullStr | Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title_full_unstemmed | Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title_short | Measurement of the B̄0 → D *+ℓ-ν̄ℓ decay rate and |Vcb| |
| title_sort | measurement of the b0 d l ν̄l decay rate and vcb |
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