Invisible axionlike dark matter from the electroweak bosonic seesaw mechanism
Invisible axionlike dark matter from the electroweak bosonic seesaw mechanism
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来自电弱玻色子跷跷板机制的不可见轴子状暗物质
DOI：
10.1103/physrevd.94.095011
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Yuya Yamaguchi
中科院分区：
文献类型：
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作者：
Hiroyuki Ishida;Shinya Matsuzaki;Yuya Yamaguchi
我们在经典标度不变的标准模型(SM)的基础上，探索了一种具有强耦合矢量型动力学的模型，称为超色(HC)。在TeV尺度下，标度对称性被类矢量凝聚动态破缺，从而使SM-Higgs获得玻色子跷跷板机制的负质量平方，从而实现电弱对称性破缺。为了给出复合Nambu-Goldstone玻色子(HC介子)的质量而引入的一个基本的赝标量：HC介子可以成为一个很好的目标，在大型强子对撞机上通过双光子通道来探索。作为玻色跷跷板的结果，我们称之为起伏模式，发展了与SM粒子的微小耦合，预计将非常轻。主要衰变为双光子，可以表现为不可见的轴状暗物质。暗物质的质量受到目前可用的宇宙学和天体物理极限的限制。我们发现，通过相干振荡可以积累足够数量的暗物质的遗迹丰度。还讨论了在微波腔实验中的探测潜力。
We explore a model based on the classically scale-invariant standard model (SM) with a strongly coupled vectorlike dynamics, which is called hypercolor (HC). The scale symmetry is dynamically broken by the vectorlike condensation at the TeV scale, so that the SM Higgs acquires the negative mass squared by the bosonic seesaw mechanism to realize the electroweak symmetry breaking. An elementary pseudoscalaris introduced to give masses for the composite Nambu-Goldstone bosons (HC pions): The HC pion can be a good target to explore through a diphoton channel at the LHC. As a consequence of the bosonic seesaw, the fluctuating mode of, which we call, develops tiny couplings to the SM particles and is predicted to be very light. Thepredominantly decays to a diphoton and can behave as invisible axionlike dark matter. The mass of thedark matter is constrained by currently available cosmological and astrophysical limits to be. We find that a sufficient amount of relic abundance for thedark matter can be accumulated via the coherent oscillation. The detection potential in microwave cavity experiments is also addressed.