标题： 共振禁戒CP不对称性来自软轻子 显示英文标题

标题： Resonant Forbidden CP Asymmetry from Soft Leptons

摘要： 通过引入新粒子的量子修正来产生必要的CP不对称性，以解释早期宇宙中的重子不对称性，这是常见的做法。然而，我们证明，从标准模型轻子中已经可以产生大的CP不对称性。该机制依赖于有限温度下软轻子的重求和。在真空中动力学上被禁止的CP不对称性，可以通过热重求和轻子而共振增强七个数量级。与来自奇异粒子的共振不同，我们表明，来自软轻子的共振增强在有限温度微扰理论下受到受控宽度的保护。我们在具有隐藏味效应的轻子生成中量化了这种CP不对称性，并讨论了其意义和应用。该机制利用了轻子自身最大的作用，具有低尺度轻子生成、最小模型构建和暗物质共生成的特点。 显示英文摘要

摘要： To explain the baryon asymmetry in the early universe via leptogenesis, quantum corrections to new particles are commonly invoked to generate the necessary CP asymmetry. We demonstrate, however, that a large CP asymmetry can already arise from Standard Model leptons. The mechanism relies on resummation of soft leptons at finite temperatures. The CP asymmetry, which is kinematically forbidden in vacuum, can be resonantly enhanced from thermally resummed leptons by seven orders of magnitude. Contrary to the resonance from exotic particles, we show that the resonant enhancement from soft leptons is protected by controlled widths under finite-temperature perturbation theory. We quantify such CP asymmetries in leptogenesis with secluded flavor effects and comment on the significance and application. The mechanism exploits the maximal role of leptons themselves, featuring low-scale leptogenesis, minimal model buildings and dark matter cogenesis.