Speaker
Prof.
Milind Purohit
(University of South Carolina)
Description
We present Dalitz plot analyses for the decays of B mesons to D- D0 K+ and D0-bar D0 K+. We report the observation of the D_{s1}^* (2700)^+ resonance in these two channels and obtain measurements of the mass
M(D^*_{s1}(2700)^+) = 2699^{+14}_{−} MeV/c^2 and of the width
Γ(D^*_{s1}(2700)^+) = 127^{+24}_{−1} MeV, including statistical and
systematic uncertainties. In addition, we observe an enhancement in the
D0 K+ invariant mass around 2350–2500 MeV/c^2 in both decays
B0 to D- D0 K+ and B+ to D0bar D0 K+, which we are not able to interpret. The results are based on 429 fb−1 ofdata containing 471×10^6 BB-bar pairs collected at the Υ(4S) resonance with the BaBar detector at the SLAC National Accelerator Laboratory.
Primary author
Prof.
Milind Purohit
(University of South Carolina)