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arXiv · 1704.04505

Axion-like particle assisted strongly interacting massive particle

Ayuki Kamada·Hyungjin Kim·Toyokazu Sekiguchi
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Abstract

We propose a new realization of strongly interacting massive particles (SIMP) as self-interacting dark matter, where SIMPs couple to the Standard Model sector through an axion-like particle. Our model gets over major obstacles accompanying the original SIMP model, such as a missing mechanism of kinetically equilibrating SIMPs with the SM plasma as well as marginal perturbativity of the chiral Lagrangian density. Remarkably, the parameter region realizing $σ_{\rm self}/m_{\rm DM} \simeq 0.1 \textrm{--} 1 \, {\rm cm}^{2}/{\rm g}$ is within the reach of future beam dump experiments such as the Search for Hidden Particles (SHiP) experiment.

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Ayuki Kamada, Hyungjin Kim, Toyokazu Sekiguchi. 2017-04-25. Axion-like particle assisted strongly interacting massive particle. https://doi.org/10.1103/physrevd.96.016007

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