Non-leptonic hyperon weak decays in the Skyrme model revisited

Details Non-leptonic hyperon weak decays in the Skyrme model revisited Non-leptonic hyperon weak decays in the Skyrme model revisited

2000-01-05

arxiv.org/abs/hep-ph/0001042v2

Phys.Rev. D62 (2000) 014001

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 1 figure, appendix and references added. To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.62.014001

Non-leptonic hyperon weak decays are investigated in the SU(3) Skyrme model. We use a collective coordinate scheme, following the approach in which the symmetry breaking terms in the strong effective action are diagonalized exactly. To describe the weak interactions we use an octet dominated weak effective lagrangian that leads to a good description of the known 2\pi and 3\pi kaon decays. We show that the observed S-wave decays are reasonably well reproduced in the model. On the other hand, our calculated P-wave amplitudes do not agree with the empirical ones even though both pole and contact contributions to these amplitudes are properly taken into account. Finally, an estimate of the non-octet contributions to the decay amplitudes is presented.

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