Study of Β → p n-bar π⁰

Kai-Ning Chu¹, Yuan-Ru Lin^1*, Min-Zu Wang¹

¹Department of Physics, National Taiwan University, Taipei, Taiwan

* Presenter:Yuan-Ru Lin, email:yuanruleonlin@gmail.com

We search for the tree-diagram dominated process B⁺ → p n π0, using a data sample of 772 × 10⁶ BB-bar pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. This is the first search with the Belle detector for a decay mode including an anti-neutron. No significant signal is observed and an 90% credible upper limit on the branching fraction is set at 6.1 × 10^-6.

Keywords: Anti-neutron, Charmless B decay, Heavy flavor physics