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The lightest neutralino ($\tilde{\chi}_1^0$) is a good Dark Matter (DM)candidate in the R-parity conserving Minimal Supersymmetric Standard Model(MSSM). In this work, we consider the light higgsino-like neutralino as theLightest Stable Particle (LSP), thanks to rather small higgsino mass parameter$\mu$. We then estimate the prominent radiative corrections to theneutralino-neutralino-Higgs boson vertices. We show that for higgsino-like$\tilde{\chi}_1^0$, these corrections can significantly influence thespin-independent direct detection cross-section, even contributing close to100\% in certain regions of the parameter space. These corrections, therefore,play an important role in deducing constraints on the mass of the higgsino-likelightest neutralino DM, and thus the $\mu$ parameter.

Radiative Corrections to Aid the Direct Detection of the Higgsino-like Neutralino Dark Matter: Spin-Independent Interactions