  We consider light higgsinos and singlinos in the next-to-minimal
supersymmetric Standard Model at the Large Hadron Collider. We assume that the
singlino is the lightest supersymmetric particle and that the higgsino is the
next-to-lightest supersymmetric particle with the remaining supersymmetric
particles in the multi-TeV range. This scenario, which is motivated by the
flavor and CP issues, provides a phenomenologically viable dark matter
candidate and improved electroweak fit consistent with the measured Higgs mass.
Here, the higgsinos decay into on (off)-shell gauge boson and the singlino. We
consider the leptonic decay modes and the resulting signature is three isolated
leptons and missing transverse energy which is known as the trilepton signal.
We simulate the signal and the Standard Model backgrounds and present the
exclusion region in the higgsino-singlino mass plane at the Large Hadron
Collider at $\sqrt{s}=14$ TeV for an integrated luminosity of 300 fb$^{-1}$.
