论文标题

公理发生中的磁螺旋度腐烂的男性生成

Baryogenesis from Decaying Magnetic Helicity in Axiogenesis

论文作者

Co, Raymond T., Domcke, Valerie, Harigaya, Keisuke

论文摘要

通过动力学的未对准机制产生斧头暗物质意味着早期宇宙中标准模型费米子的大型不对称产生。即使这些不对称性在以后被洗净,它们也可能触发早期宇宙中的手性血浆不稳定性。类似地,轴与超额定量规场的直接耦合可以触发速旋不稳定性。这些不稳定性会产生螺旋磁场,并保存直到电动相变。在Electroweak相变,它们成为Baryon不对称的来源,这可能比原始的公理发生建议更有效。我们讨论了轴突暗物质产生的限制因素不对称性的过量以及最少的,尽管是微调的设置,但可以实现正确的暗物质丰度和巴里昂不对称性。对于给定的轴衰变常数,这导致了对Peccei Quinn场的径向质量的尖锐预测,这是超对称理论的软质量尺度。

Generating axion dark matter through the kinetic misalignment mechanism implies the generation of large asymmetries for Standard Model fermions in the early universe. Even if these asymmetries are washed out at later times, they can trigger a chiral plasma instability in the early universe. Similarly, a direct coupling of the axion with the hypercharge gauge field can trigger a tachyonic instability. These instabilities produce helical magnetic fields, which are preserved until the electroweak phase transition. At the electroweak phase transition, these become a source of baryon asymmetry, which can be much more efficient than the original axiogenesis proposal. We discuss constraints on axion dark matter production from the overproduction of the baryon asymmetry as well as a minimal, albeit fine-tuned setup, where both the correct dark matter abundance and baryon asymmetry can be achieved. For a given axion decay constant, this leads to a sharp prediction for the mass of the radial direction of the Peccei Quinn field, which is a soft mass scale in supersymmetric theories.

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