Aubert, B. et al. (2009) Dalitz plot analysis of B-→D+π-π-. Physical Review D, 79 (11). p. 112004. ISSN 1550-7998

We report on a Dalitz plot analysis of B-→D+π-π- decays, based on a sample of about 383×106 Υ(4S)→BB̅ decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We find the total branching fraction of the three-body decay: B(B-→D+π-π-)=(1.08±0.03±0.05)×10-3. We observe the established D2*0 and confirm the existence of D0*0 in their decays to D+π-, where the D2*0 and D0*0 are the 2+ and 0+cu̅ P-wave states, respectively. We measure the masses and widths of D2*0 and D0*0 to be: mD2*0=(2460.4±1.2±1.2±1.9)  MeV/c2, ΓD2*0=(41.8±2.5±2.1±2.0)  MeV, mD0*0=(2297±8±5±19)  MeV/c2, and ΓD0*0=(273±12±17±45)  MeV. The stated errors reflect the statistical and systematic uncertainties, and the uncertainty related to the assumed composition of signal events and the theoretical model.

Add to AnyAdd to TwitterAdd to FacebookAdd to LinkedinAdd to PinterestAdd to Email