Speaker
Fabio Anulli
(Universita e INFN, Roma I (IT))
Description
We present full Dalitz plot analyses for the decays of B mesons to
D^- D^0 K^+ and Dbar^0 D^0 K^+. We report the observation of the
Ds1*(2700) resonance in these two channels and obtain measurements of the mass M(Ds1*(2700)) = 2699 +14-7 MeV/c2 and of the width Gamma(Ds1*(2700)) = 127 +24-19 MeV, including statistical and systematic uncertainties. In addition, we observe an enhancement in the D^0 K^+ invariant mass around 2350-2500 MeV/c2 in both decays, which we are not able to interpret. The results are based on 429 fb-1 of data containing 471 million B Bbar pairs collected at the Y(4S) resonance with the BABAR detector at SLAC.
Author
Fabio Anulli
(Universita e INFN, Roma I (IT))
