Abstract
A weak current operator of second class which is constructed of mesons only been suggested by Lipkin. If this current is extended to full SU 3 it contributes a second class part to tthe axial vector form factor of ΣΛ decay. This is calculated, using a standard Feynman cut-off to circumvent the logarithmic divergence. Present experiments restrict the coupling of such a current to the leptonic current to about one order of magnitude below the weak four fermi coupling.
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