论文标题
sommerfeld增强共鸣的暗物质歼灭
Sommerfeld enhancement of resonant dark matter annihilation
论文作者
论文摘要
如果歼灭发生在狭窄的谐振中，或者如果暗物质颗粒在an灭之前经历了远距离力（Sommerfeld效应），则可以通过数量级来扩增暗物质歼灭横截面。我们表明，当两种增强都存在时，它们都会完全分解，也就是说，在小速度和狭窄宽度扩张中，所有长距离无效的效果都在领先顺序取消。然后，我们研究了``超级共振''从标准模型Higgs门户中的两种机制和简化MSSM启发的深色 - 摩擦的黑暗场景中的an灭的可行性。
The dark matter annihilation cross section can be amplified by orders of magnitude if the annihilation occurs into a narrow resonance, or if the dark-matter particles experience a long-range force before annihilation (Sommerfeld effect). We show that when both enhancements are present they factorize completely, that is, all long-distance non-factorizable effects cancel at leading order in the small-velocity and narrow-width expansion. We then investigate the viability of ``super-resonant'' annihilation from the coaction of both mechanisms in Standard Model Higgs portal and simplified MSSM-inspired dark-matter scenarios.
