论文标题
具有重QCD轴的公理发生
Axiogenesis with a Heavy QCD Axion
论文作者
论文摘要
我们证明，观察到的与反物质相比的宇宙学过量可能起源于重量QCD轴，该QCD轴是解决了强大的CP问题，但其质量远大于标准模型QCD强动力学的质量。我们研究了田间空间中重的QCD轴轴的旋转，该空间通过弱且强的SPHALERON过程转移到Baryon不对称中。这为重型QCD轴提供了强大的宇宙学动机，这具有很高的实验感兴趣。可行的参数空间具有轴质量$ m_a $在1〜MEV和10 GEV之间，并且衰减常数$ f_a <10^5 $ GEV可以通过基于加速器的直接轴搜索和宇宙微波背景的观察来探测。
We demonstrate that the observed cosmological excess of matter over antimatter may originate from a heavy QCD axion that solves the strong CP problem but has a mass much larger than that given by the Standard Model QCD strong dynamics. We investigate a rotation of the heavy QCD axion in field space, which is transferred into a baryon asymmetry through weak and strong sphaleron processes. This provides a strong cosmological motivation for heavy QCD axions, which are of high experimental interest. The viable parameter space has an axion mass $m_a$ between 1~MeV and 10 GeV and a decay constant $f_a < 10^5$ GeV, which can be probed by accelerator-based direct axion searches and observations of the cosmic microwave background.
