Branching fraction, polarization and CP-violating asymmetries in B 0 →D* + D* - decays
Journal
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Journal Volume
72
Journal Issue
1
Pages
34-42
Date Issued
2005
Author(s)
Abstract
We present measurements of the branching fraction, the polarization parameters and CP-violating asymmetries in B0â D*+D *- decays using a 140 fb-1 data sample collected at the Î¥(4S) resonance with the Belle detector at the KEKB energy-asymmetric e+e- collider. We obtain B(B0â D*+D*-)=[0. 81±0.08(stat)±0.11(syst)]à 10-3, Râ ¥=0.19±0. 08(stat)±0.01(syst), R0=0.57±0.08(stat)±0.02(syst), S=-0.75±0.56(stat)±0.12(syst) and A=-0.26±0.26(stat) ±0.06(syst). Consistency with Standard Model expectations is also discussed.
SDGs
Type
journal article