J. -T. Wei, M. -Z. Wang
Published 2007-06-28, updated 2007-10-15Version 3
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.
Comments: 15 pages, 5 figures (14 figure files), revisions to Phys. Lett. B
Journal: Phys.Lett.B659:80-86,2008
Search for B_{s}^{0}->hh Decays at the $Υ(5S)$ Resonance
Search for $B^0 \to K^{*0} \overline{K}{}^{*0}$, $B^0 \to K^{*0} K^{*0}$ and $B^0 \to K^+π^- K^{\mp}π^{\pm}$ Decays
Observation of D^+ to eta e^+ nu_e
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