Scalar quintuplet minimal dark matter with Yukawa interactions: perturbative up to the Planck scale Supported by the National Natural Science Foundation of China (NSFC) (11375277, 11410301005, 11647606, 11005163, 11775086, 11875327, 11805288), the Fundamental Research Funds for the Central Universities, the Natural Science Foundation of Guangdong Province (2016A030313313), and the Sun Yat-Sen University Science Foundation.

Luo, Zhu ( School of Physics, Sun Yat-Sen University, Guangzhou 510275, China) ; Cai, Cheng-feng ( School of Physics, Sun Yat-Sen University, Guangzhou 510275, China) ; Kang, Zhao-feng ( School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China) ; Yu, Zhao-huan ( School of Physics, Sun Yat-Sen University, Guangzhou 510275, China) ( ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of Melbourne, Victoria 3010, Australia) ; Zhang, Hong-hao ( School of Physics, Sun Yat-Sen University, Guangzhou 510275, China)

06 March 2019

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 ~1014 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 ~1010 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.


Published in: Chinese Phys. C 43 (2019) 023102
Published by: Institute of Physics Publishing/Chinese Academy of Sciences
DOI: 10.1088/1674-1137/43/2/023102
arXiv: 1711.07396
License: CC-BY-3.0



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