Multi-component dark matter through a radiative Higgs portal

被引：0
作者：
Anthony DiFranzo
Gopolang Mohlabeng
机构：
[1] Fermilab,Theoretical Physics Department
[2] University of California,Department of Physics and Astronomy
[3] Rutgers University,Department of Physics and Astronomy
[4] University of Kansas,Department of Physics and Astronomy
来源：
Journal of High Energy Physics | / 2017卷
关键词：
Beyond Standard Model; Cosmology of Theories beyond the SM; Higgs Physics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We study a multi-component dark matter model where interactions with the Standard Model are primarily via the Higgs boson. The model contains vector-like fermions charged under SU(2)W × U(1)Y and under the dark gauge group, U(1)′. This results in two dark matter candidates. A spin-1 and a spin-12\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \frac{1}{2} $$\end{document} candidate, which have loop and tree-level couplings to the Higgs, respectively. We explore the resulting effect on the dark matter relic abundance, while also evaluating constraints on the Higgs invisible width and from direct detection experiments. Generally, we find that this model is highly constrained when the fermionic candidate is the predominant fraction of the dark matter relic abundance.
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