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arXiv · 1711.07396

Scalar Quintuplet Minimal Dark Matter with Yukawa Interactions: Perturbative up to the Planck Scale

Chengfeng Cai·Zhaofeng Kang·Zhu Luo·Zhao-Huan Yu·Hong-Hao Zhang
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Abstract

We confront the perturbativity problem in the real scalar quintuplet minimal dark matter model. In the original model, the quintuplet quartic self-coupling inevitably hits a Landau pole at a scale $\sim 10^{14}$ GeV, far below the Planck scale. In order to push up this Landau pole scale, we extend the model with a fermionic quintuplet and three fermionic singlets which couple to the scalar quintuplet via Yukawa interactions. Involving such Yukawa interactions at a scale $\sim 10^{10}$ GeV can not only keep all couplings perturbative up to the Planck scale, but can also explain the smallness of neutrino masses via the type-I seesaw mechanism. Furthermore, we identify the parameter regions favored by the condition that perturbativity and vacuum stability are both maintained up to the Planck scale.

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Chengfeng Cai, Zhaofeng Kang, Zhu Luo, Zhao-Huan Yu, Hong-Hao Zhang. 2019-01-07. Scalar Quintuplet Minimal Dark Matter with Yukawa Interactions: Perturbative up to the Planck Scale. https://doi.org/10.1088/1674-1137%2F43%2F2%2F023102

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