arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2609.21196hep-ph

低再加热温度下Scotogenic模型中的FIMP暗物质

FIMP dark matter in the scotogenic model at low-reheating temperatures

  • Institución Universitaria ITM(ITM大学)
  • Universidad de Antioquia UdeA(安蒂奥基亚大学)
  • Universidade Federal do Rio Grande do Norte(北里奥格兰德联邦大学)
  • Millennium Institute for Subatomic Physics at High-Energy Frontier (SAPHIR)(高能前沿子物理千年研究所(SAPHIR))
  • Universidad de La Serena(拉塞雷纳大学)

机构由 AI 辅助整理,请以论文原文为准。

Robinson Longas, Andrés Rivera, David Suarez

AI总结:

本文研究低再加热温度下Scotogenic模型中通过冻结机制产生的单态费米子暗物质,发现低再加热情景可重塑可行参数空间,在满足轻子味破坏和宇宙学约束下提升模型可测性。

AI中文摘要:

Scotogenic模型提供了一个有吸引力的框架,既能解释轻中微子质量,又能容纳一个可行的暗物质候选者。在这项工作中,我们研究了通过冻结机制产生的单态费米子暗物质$N_1$的现象学,该机制以瞬时低再加热温度$T_{\text{rh}}$为特征。我们探索了模型可行的参数空间,纳入了来自轻子味破坏($\mu \to e \gamma$)和直接探测极限的当前约束。我们表明,低再加热情景显著重塑了$N_1$暗物质的可行区域,在保持与当前轻子味破坏和宇宙学约束一致的同时,提高了在FIMP情景下测试Scotogenic模型的前景。

英文摘要:

The scotogenic model offers an attractive framework that explains light neutrino masses while accommodating a viable dark matter candidate. In this work, we study the phenomenology of singlet fermion dark matter, $N_1$, produced via the freeze-in mechanism characterized by an instantaneous low reheating temperature, $T_{\text{rh}}$. We explore the model's viable parameter space, incorporating current bounds from lepton flavor violation ($μ\to e γ$) and direct detection limits. We show that low-reheating scenarios significantly reshape the viable region for $N_1$ dark matter, improving prospects for testing the scotogenic model in the FIMP scenario while keeping it consistent with current lepton flavor violation and cosmological bounds.

↑