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- W2298198110 abstract "As an alternative to direct measurements, we extract the branching fractions Bi (B + → X i l + ν) 1 with X i = D, D ∗ , D0, D � 1 , D1, D2, D � , D �∗ and non-resonant final states (D (∗) π) nr, from a fit to electron energy, hadronic mass and combined hadronic mass-energy moments mea- sured in inclusive B → Xclν decays. The fit is per- formed by constraining the sum of exclusive branching fractions to the measured B(B + → Xcl + ν) value, and with different sets of additional constraints for the directly measured branching fractions. There is no fit scenario in which a single branching fraction can close the gap between B(B + → Xcl + ν) and the sum of known branching frac- tions Bi (B + → X i l + ν). The fitted B(B + → D ∗0 l + ν) is found to be significantly larger than its direct measure- ment. B(B + → D 0 l + ν) is in good agreement with the directmeasurement;whenB(B + → D ∗0 l + ν)isconstrained the fitted B(B + → D 0 l + ν) increases. Within large uncer- tainties, B(B + → D � 0 1 l + ν) agrees with direct measure- ments. Depending on the fit scenario, B(B + → D 0l + ν)is consistent with or larger than its direct measurement. The fit is not able to easily disentangle B + → D 0 l + ν and B + → D 0 l + ν, and tends to increase the sum of these two branching fractions. B(B + → (D (∗) π) nrl + ν) with non- resonant (D (∗) π) nr final states is found to be of the order 0.3 %. No indication is found for significant contributions from so far unmeasured B + → D � (∗)0 l + ν decays." @default.
- W2298198110 created "2016-06-24" @default.
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- W2298198110 date "2014-02-12" @default.
- W2298198110 modified "2023-09-27" @default.
- W2298198110 title "Constraints on exclusive branching fractions $BF_i(B^+to X_c^il^+nu)$ from moment measurements in inclusive $Bto X_clnu$ decays" @default.
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