Reconsidering the Blind Spots of Neutralino Dark Matter: a Perturbative Approach

초록

We consider the blind spots of neutralino dark matter where the signals in direct detection experiments are extremely weak. The neutralino dark matter leaves its signal via the interaction mediated by Higgs bosons. However, the neutralino-Higgs coupling can be tiny due to some combinations of Bino-Higgsino or Wino-Higgsino mixing. Thus, blind spots may exist in direct detection experiments. In this paper, we review neutralino blind spots based on the Higgs low-energy theorem and revisit the same parameter space by using perturbation calculation. We also analyze the conditions for the blind spot when light and heavy Higgs contributions were substantial. © 2022 The Korean Physical Society. All rights reserved.

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