Study for B⁰ → D^(*)- p anti-n at Belle II

Yu-tan Chen^1*, Min-zu Wang¹, Jing-ge Shiu¹

¹Dept. of Physics, National Taiwan University, Taipei, Taiwan

* Presenter:Yu-tan Chen, email:d04222012@ntu.edu.tw

This study will show how we measure the branching fractions for B⁰ → D^- p anti-n and B⁰ → D^*-(2010) p anti-n using MC samples scaled to 363 fb^-1 data collected at Belle II experiment. The result from the second channel will be compared to the previous results obtained by CLEO. The process for the differential branching fraction to the invariant mass of the baryonic system will also be shown. This will verify the threshold enhancement phenomena.
This study is the first analysis with anti-n using ECL information at Belle II. The identification of anti-n was developed using MVA technology by our team. Further details will be presented in another talk.

Keywords: Belle II, B physics, antineutron, threshold enhancement