Nonleptonic Decays of Chiral Solitons and a Possible Resolution of the S-Wave P-Wave Puzzle
Published version is located at http://prd.aps.org/abstract/PRD/v32/i7/p1733_1
We calculate the nonleptonic weak decays of hyperons in the Skyrmion model of baryons. The weak-interaction chiral Lagrangian is that known from kaon decay, providing a zero-parameter description of the decay amplitudes. In the S waves the PCAC (partially conserved axial-vector current) relation is verified, but the magnitude emerges as a factor of 3 too small, probably indicating a slow convergence of the chiral expansion. In the P waves, new and important terms are found which are not included in standard analyses. These modify the PCAC treatment of hyperon decay and can provide the resolution of the long-standing S-wave/P-wave puzzle.
JF Donoghue, Eugene Golowich, and YCR Lin. "Nonleptonic Decays of Chiral Solitons and a Possible Resolution of the S-Wave P-Wave Puzzle" Physical Review D 32.7 (1985): 2728-2728.
Available at: http://works.bepress.com/eugene_golowich/75