| Autor: |
Athanas, M, Avery, P, Jones, C, Lohner, M, Prescott, C, Yelton, J, Zheng, J, Brandenburg, G, Briere, R, Ershov, A, Gao, Y, Kim, D, Wilson, R, Yamamoto, H, Browder, T, Li, F, Li, Y, Rodriguez, J, Bergfeld, T, Eisenstein, B, Ernst, J, Gladding, G, Gollin, G, Hans, R, Johnson, E |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Popis: |
We have studied the decay B̄ → Dlv̄, where l = e or μ. From a fit to the differential decay rate dΓ/dw we measure the rate normalization FD(1)|Vcb| and form factor slope ρ̂D2, and, using measured values of τB, find Γ(B̄ → Dlv̄) = (12.0 ± 0.9 ± 2.1) ns-1. The resulting branching fractions are B(B̄0 → D+l-v̄) = (1.87 ± 0.15 ± 0.32)% and B(B- → D0l v̄) = (1.94 ± 0.15 ± 0.34)%. The form factor parameters are in agreement with those measured in B̄ → D*lv̄ decays, as predicted by heavy quark effective theory. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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