论文标题
沉重的暗物质，中微子的质量和希格斯的自然性来自强烈相互作用的隐藏区域
Heavy Dark Matter, Neutrino Masses and Higgs Naturalness from a Strongly Interacting Hidden Sector
论文作者
论文摘要
我们考虑具有强烈相互作用的QCD样扇形，至少两代右中微子和一个标量表单元的标准模型（SM）的扩展。一旦标量单元获得了非零真空期望值，就会通过类型的SEESAW机制产生主动中微子质量。同时，通过涉及这些巨大费米子的辐射校正来产生电动量表。这是场景的本质，被称为“中微子选项”，成功的右撇子中微子在$ 10^7-10^8 $ GEV范围内。这项工作的主要目的是仔细检查在这种实现中适应暗物质的潜力。候选暗物质是Nambu-Goldstone玻色子，由于隐藏的手性对称性的动态破坏而出现。在这项工作中研究的质谱是使Nambu-Goldstone玻色子和单线标量标量的质量超过了右手中微子的标量。拥有所有相关粒子的质量，几个数量级以上的$ \ Mathcal {o} $（tev）是无法实现的，因此我们转向替代方案，即冻结。 Nambu-Goldstone玻色子可以与不在SM中但不可忽略的颗粒相互作用，通过与SM的不相称的耦合具有不可忽略的丰度。利用这一点，我们证明了模型中的暗物质是在温度尺度上成功生产的，在温度尺度上，右手中微子仍然稳定。我们注意到，可以在右撇子中微子衰减中产生轻松的不对称性不对称性，足以产生宇宙的可观察到的不对称性。因此，我们推断该模型有可能同时解决当代高能物理学中最相关的难题。
We consider the extension of the Standard Model (SM) with a strongly interacting QCD-like hidden sector, at least two generations of right-handed neutrinos and one scalar singlet. Once scalar singlet obtains a nonzero vacuum expectation value, active neutrino masses are generated through type-I seesaw mechanism. Simultaneously, the electroweak scale is generated through the radiative corrections involving these massive fermions. This is the essence of the scenario that is known as the "neutrino option" for which the successful masses of right-handed neutrinos are in the range $10^7-10^8$ GeV. The main goal of this work is to scrutinize the potential to accommodate dark matter in such a realization. The dark matter candidates are Nambu-Goldstone bosons which appear due to the dynamical breaking of the hidden chiral symmetry. The mass spectrum studied in this work is such that masses of Nambu-Goldstone bosons and singlet scalar exceed those of right-handed neutrinos. Having the masses of all relevant particles several orders of magnitude above $\mathcal{O}$(TeV), the freeze-out of dark matter is not achievable and hence we turn to alternative scenarios, namely freeze-in. The Nambu-Goldstone bosons can interact with particles that are not in SM but, however, have non-negligible abundance through their not-too-small couplings with SM. Utilizing this, we demonstrate that the dark matter in the model is successfully produced at temperature scale where the right-handed neutrinos are still stable. We note that the lepton number asymmetry sufficient for the generation of observable baryon asymmetry of the Universe can be produced in right-handed neutrino decays. Hence, we infer that the model has the potential to simultaneously address several of the most relevant puzzles in contemporary high-energy physics.
