New Tensor Interactions and the $K_L$-$K_S$ Mass Difference

The minimal standard electroweak model yields approximately half the observed value of the $K_L$-$K_S$ mass difference. Antisymmetric tensor fields incorporated into the standard model can provide the rest $0.5\times(\Delta m_{LS})_{\exp}$. The effective lepton–lepton, quark–lepton and quark–quark tensor interactions induced by the charged tensor particles are presented.