%0 Journal Article
%T Study of the decay mechanism for B+ to p pbar K+ and B+ to p pbar pi+
%A J. -T. Wei
%A M. -Z. Wang
%J Physics
%D 2007
%I arXiv
%R 10.1016/j.physletb.2007.11.063
%X We study the characteristics of the low mass ppbar enhancements near threshold in the three-body decays B+ to p pbar K+ and B+ to p pbar pi+. We observe that the proton polar angle distributions in the ppbar helicity frame in the two decays have the opposite polarity, and measure the forward-backward asymmetries as a function of the ppbar mass for the p pbar K+ mode. We also search for the intermediate two-body decays, B+ to pbar Delta++ and B+ to p Delta0bar, and set upper limits on their branching fractions. These results are obtained from a 414 fb^{-1} data sample that contains 449 times 10^6 BBbar events collected near the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+ e- collider.
%U http://arxiv.org/abs/0706.4167v3