Study of $B^+ \rightarrow p \overline{n} π^0$
hep-ex
/ Authors
Belle Collaboration, K. -N. Chu, Y. -R. Lin, M. -Z. Wang, I. Adachi, K. Adamczyk, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan
and 196 more authors
V. Aulchenko, T. Aushev, R. Ayad, V. Babu, Sw. Banerjee, P. Behera, K. Belous, J. Bennett, M. Bessner, V. Bhardwaj, B. Bhuyan, T. Bilka, D. Biswas, D. Bodrov, G. Bonvicini, J. Borah, A. Bozek, M. Bračko, P. Branchini, T. E. Browder, A. Budano, M. Campajola, D. Červenkov, M. -C. Chang
/ Abstract
We search for the tree-diagram dominated process $B^+ \rightarrow p \overline{n} π^0$, using a data sample of $772 \times 10^6~B\overline B$ 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 $6.1\times10^{-6}$.