heavy, the gluino is long-lived providing a clear signature. Also the neutralino and chargino Yukawa couplings deviate from their usual MSSM prediction since they evolve differently below the splitting scale $\tilde m$. Fig. \[fig:beyond\](a) shows the evolution of four anomalous chargino mixing parameters (for $\tilde m=10^9$ GeV). By combining precision measurements of chargino and neutralino masses and Yukawa couplings at the ILC with gluino mass and life-time at the LHC, it has been demonstrated [@Kilian:2005kr] that the nature of the model can be verified.

The simplest extension of the MSSM includes an additional singlet superfield $S$. It is motivated by the $\mu$ problem of MSSM since the vacuum expectation value of the scalar component of $S$ provides an effective $\mu$. The spectrum, apart from the sparticle content of MSSM, includes two additional Higgs scalars and a neutralino which can mix with the four neutralinos of the MSSM. The parameters of the nMSSM can conspire to mimic the mass spectrum of the first four neutralinos. The question then arises how to differentiate experimentally MSSM from nMSSM if at the first stage of ILC with $\sqrt{s}=500$ GeV only two light neutralinos and light chargino are seen. It has been shown in a 