Is a Miracle-less WIMP Ruled out?

被引:7
|
作者
Arakawa, Jason [1 ]
Tait, Tim M. P. [1 ]
机构
[1] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA
来源
SCIPOST PHYSICS | 2021年 / 11卷 / 02期
基金
美国国家科学基金会;
关键词
DARK-MATTER HALOS; SEARCH; HEAVY;
D O I
10.21468/SciPostPhys.11.2.019
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We examine a real electroweak triplet scalar field as dark matter, abandoning the requirement that its relic abundance is determined through freeze out in a standard cosmological history (a situation which we refer to as 'miracle-less WIMP'). We extract the bounds on such a particle from collider searches, searches for direct scattering with terrestrial targets, and searches for the indirect products of annihilation. Each type of search provides complementary information, and each is most effective in a different region of parameter space. LHC searches tend to be highly dependent on the mass of the SU(2) charged partner state, and are effective for very large or very tiny mass splitting between it and the neutral dark matter component. Direct searches are very effective at bounding the Higgs portal coupling, but ineffective once it falls below lambda(eff) less than or similar to 10(-3). Indirect searches suffer from large astrophysical uncertainties due to the backgrounds and J-factors, but do provide key information for similar to 100 GeV to TeV masses. Synthesizing the allowed parameter space, this example of WIMP dark matter remains viable, but only in miracle-less regimes.
引用
收藏
页数:18
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