18-22 May 2015
Wayne State University
US/Eastern timezone
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Contribution

Wayne State University

Dalitz plot analysis of B -> D D K decays

Speakers

  • Prof. Milind PUROHIT

Primary authors

Abstract content

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.