18–22 May 2015
Wayne State University
US/Eastern timezone

Dalitz plot analysis of B -> D D K decays

20 May 2015, 10:50
20m
Wayne State University

Wayne State University

Wayne State University Detroit, MI 48201

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)

Presentation materials