Dalitz plot analyses of $B^0 → D^−D^0K^+$ and $B^+ → \overline{D}^0D^0K^+$ decays

We present Dalitz plot analyses for the decays of B mesons to D−D0K+ and D¯0D0K+. We report the observation of the Ds1*(2700)+ resonance in these two channels and obtain measurements of the mass M(Ds1*(2700)+)=2699−7+14 MeV/c2 and of the width Γ(Ds1*(2700)+)=127−19+24 MeV, including statistical and systematic uncertainties. In addition, we observe an enhancement in the D0K+ invariant mass around 2350–2500 MeV/c2 in both decays B0→D−D0K+ and B+→D¯0D0K+, which we are not able to interpret. The results are based on 429 fb−1 of data containing 471×106BB¯ pairs collected at the ϒ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory.

Note:

15 pages, 4 figures, published version

13.25.Hw
14.40.Nd
Dalitz plot
enhancement
statistical
meson
moduli
B: decay
branching ratio: measured
BaBar

References(35)

Figures(12)

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