Factorization contributions and the breaking of the ΔI=1/2 rule in weak ΛNρ and ΣNρ couplings
- 1 March 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 51 (3) , 1576-1579
- https://doi.org/10.1103/physrevc.51.1576
Abstract
We compute the modified factorization contributions to the Λ→Nρ and Σ→Nρ couplings and demonstrate that these contributions naturally include ΔI=3/2 terms which are comparable (≃0.4 to -0.8 times) in magnitude to the corresponding ΔI=1/2 terms. As a consequence, we conclude models which treat vector meson exchange contributions to the weak conversion process ΛN→NN assuming such weak couplings to satisfy the ΔI=1/2 rule are unlikely to be reliable.Keywords
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