Study of the baryon-antibaryon low-mass enhancements in charmless three-body baryonic B decays

The angular distributions of the baryon-antibaryon low-mass enhancements seen in the charmless three-body baryonic B decays B+→pp¯K+, B0→pp¯KS0 and B0→pΛ¯π− are reported. A quark fragmentation interpretation is supported, while the gluonic resonance picture is disfavored. Searches for the Θ+ and Θ++ pentaquarks in the relevant decay modes and possible glueball states G with 2.2GeV/c2