Three-body baryonic decays and suchC.-K. Chua and W.-S. Hou
Department of Physics, National Taiwan University, Taipei, Taiwan 10764, China
(Received: 27 February 2003 / Published online: 5 May 2003 )
We study the decay rates and spectra of , , , , and modes in the factorization approach. The baryon pairs are produced through vector, axial vector, scalar and pseudoscalar operators. Previous predictions, including ours, are an order of magnitude too small compared to experiment. By incorporating QCD counting rules and studying the asymptotic behavior, we find an earlier relation between the pseudoscalar and axial vector form factors to be too restrictive. Instead, the pseudoscalar and scalar form factors are related asymptotically. Following this approach, the measured rate ( ) and spectrum can be understood, and should be dominantly left-hand polarized, while we expect . These results and other predictions can be checked soon.
© Società Italiana di Fisica, Springer-Verlag 2003