论文标题
朝向TEV尺度的超对称性电动生成
Towards TeV-Scale Supersymmetric Electroweak Baryogenesis
论文作者
论文摘要
Electroweak Baryogeny（EWBG）为生成Baryon不对称性提供了令人信服的叙述，但是在标准模型中无法实现，并导致最小的超对称标准模型（MSSM）的严重实验张力。这些实验紧张局势的原因之一是，在传统的EWBG方法中，需要在Electroweak相过渡中输入新物理学，而通常将其固定在$ \ sim $ \ sim $ 100 GEV上。在这里，我们证明了标准模型的超对称扩展中的子TEV场的添加允许TEV规模强烈的一阶电子相变。虽然早期的文献暗示了关于超对称模型中高温对称性破坏的无论证，但我们可以通过系统地抑制大量状态的理论中某些热校正来证明这些论点。提出的模型将EWBG所需的新物理学推向了更高的尺度，因此提出了新的参数区域，以实现EWBG并逃避实验张力，但是预计它们不会完全使EWBG完全在可预见的未来实验范围之外。
Electroweak baryogenesis (EWBG) offers a compelling narrative for the generation of the baryon asymmetry, however it cannot be realised in the Standard Model, and leads to severe experimental tensions in the Minimal Supersymmetric Standard Model (MSSM). One of the reasons for these experimental tensions is that in traditional approaches to EWBG new physics is required to enter at the electroweak phase transition, which conventionally is fixed near $\sim$100 GeV. Here we demonstrate that the addition of sub-TeV fields in supersymmetric extensions of the Standard Model permits TeV-scale strongly first-order electroweak phase transition. While earlier literature suggested no-go arguments with regards to high-temperature symmetry breaking in supersymmetric models, we show these can be evaded by employing a systematic suppression of certain thermal corrections in theories with a large number of states. The models presented push the new physics needed for EWBG to higher scales, hence presenting new parameter regions in which to realize EWBG and evade experimental tensions, however they are not expected to render EWBG completely outside of the foreseeable future experimental reach.
