Measurement of the branching fractions for B-→D(*)+π-+ -ν? and B0?→D(*)0π+ -ν? and B
Journal
Physical Review D - Particles, Fields, Gravitation and Cosmology
Journal Volume
72
Journal Issue
5
Date Issued
2005
Author(s)
Liventsev, D.
Abstract
We report on a measurement of the branching fractions for B-→D(*)+π- -ν̄ and B0̄→D(*)0π+ -ν̄ with 275×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at KEKB. Events are tagged by fully reconstructing one of the B mesons in hadronic modes. We obtain B(B-→D+π- -ν̄)=(0.54±0.07(stat)±0.07(syst) ±0.06(BR))×10-2, B(B-→D*+π- -ν̄)=(0. 67±0.11(stat)±0.09(syst)±0.03(BR))×10-2, B(B0̄→D0π+ -ν̄)=(0.33±0.06(stat)±0.06(syst) ±0.03(BR))×10-2, B(B0̄→D*0π+ -ν̄)=(0.65±0.12(stat)±0.08(syst)±0.05(BR)) ×10-2, where the third error comes from the error on B̄→ D(*) -ν̄ decays. Contributions from B0̄→D*+- ν̄ decays are excluded in the measurement of B0̄→D0π+- ν̄. © 2005 The American Physical Society.
Type
journal article