hep-ph/0204066

Authors: V.V.Kiselev, A.K.Likhoded, V.F.Obraztsov
"Contributions of leptoquark interactions into the tensor and scalar
form factors of K to pi l nu_l decay"

        Abstract
In the framework of scalar-vector dominance we calculate the hadronic matrix 
elements of scalar and tensor effective quark currents induced by virtual 
leptoquark interactions. Combined bounds on the product of couplings and 
leptoquark masses are obtained from experimental data.