Higgs exotic decays in general NMSSM with self-interacting dark matter

Understand

Under current LHC and dark matter constraints, the general NMSSM can have self-interacting dark matter to explain the cosmological small structure.

• In this scenario, the dark matter is the light singlino-like neutralino ($\chi$) which self-interacts through exchanging the light singlet-like scalars ($h_1, a_1$).
• These light scalars and neutralinos inevitably interact with the 125 GeV SM-like Higgs boson ($h_{SM}$), which cause the Higgs exotic decays $h_{SM} \to h_1 h_1, a_1 a_1, \chi\chi$.
• We first demonstrate the parameter space required by the explanation of the cosmological small structure and then display the Higgs exotic decays.