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Dark matter in minimal dimensional transmutation with multicritical-point principle
Journal of High Energy Physics ( IF 5.4 ) Pub Date : 2021-01-01 , DOI: 10.1007/jhep01(2021)087
Yuta Hamada , Hikaru Kawai , Kin-ya Oda , Kei Yagyu

We investigate a model with two real scalar fields that minimally generates exponentially different scales in an analog of the Coleman-Weinberg mechanism. The classical scale invariance — the absence of dimensionful parameters in the tree-level action, required in such a scale generation — can naturally be understood as a special case of the multicritical-point principle. This two-scalar model can couple to the Standard Model Higgs field to realize a maximum multicriticality (with all the dimensionful parameters being tuned to critical values) for field values around the electroweak scale, providing a generalization of the classical scale invariance to a wider class of criticality. As a bonus, one of the two scalars can be identified as Higgs-portal dark matter. We find that this model can be consistent with the constraints from dark matter relic abundance, its direct detection experiments, and the latest LHC data, while keeping the perturbativity up to the reduced Planck scale. We then present successful benchmark points satisfying all these constraints: the mass of dark matter is a few TeV, and its scattering cross section with nuclei is of the order of 10 − 9 pb, reachable in near future experiments. The mass of extra Higgs boson H is smaller than or of the order of 100 GeV, and the cross section of e + e − → ZH can be of fb level for collision energy 250 GeV, targetted at future lepton colliders.

中文翻译:

基于多临界点原理的最小维嬗变暗物质

我们研究了一个具有两个实标量场的模型,该模型在 Coleman-Weinberg 机制的模拟中最低限度地生成指数不同的尺度。经典的尺度不变性——这种尺度生成所需的树级动作中缺少维度参数——自然可以理解为多临界点原理的一个特例。这种双标量模型可以耦合到标准模型希格斯场,以实现电弱尺度附近场值的最大多临界性(所有维度参数都调整到临界值),从而将经典尺度不变性推广到更广泛的类别的关键。作为奖励,两个标量之一可以被识别为希格斯门暗物质。我们发现该模型可以与暗物质遗迹丰度、其直接检测实验和最新 LHC 数据的约束保持一致,同时将扰动保持在缩减的普朗克尺度上。然后,我们提出了满足所有这些约束的成功基准点:暗物质的质量为几 TeV,其与原子核的散射截面约为 10 - 9 pb,可在不久的将来实验中达到。额外的希格斯玻色子 H 的质量小于或约为 100 GeV,并且 e + e - → ZH 的横截面可以达到 fb 级,碰撞能量为 250 GeV,目标是未来的轻子对撞机。然后,我们提出了满足所有这些约束的成功基准点:暗物质的质量为几 TeV,其与原子核的散射截面约为 10 - 9 pb,可在不久的将来实验中达到。额外的希格斯玻色子 H 的质量小于或约为 100 GeV,并且 e + e - → ZH 的横截面可以达到 fb 级,碰撞能量为 250 GeV,目标是未来的轻子对撞机。然后,我们提出了满足所有这些约束的成功基准点:暗物质的质量为几 TeV,其与原子核的散射截面约为 10 - 9 pb,可在不久的将来实验中达到。额外的希格斯玻色子 H 的质量小于或约为 100 GeV,并且 e + e - → ZH 的横截面可以达到 fb 级,碰撞能量为 250 GeV,目标是未来的轻子对撞机。
更新日期:2021-01-01
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