论文标题
超新星爆炸的斧头签名通过核子电动偶极门户
Axion signatures from supernova explosions through the nucleon electric-dipole portal
论文作者
论文摘要
我们考虑仅通过核子电动偶极力矩（EDM）门户耦合到核子和光子的轴。该耦合是QCD轴的模型独立于模型的特征，该特征解决了强大的CP问题，并且在更通用的轴突样粒子设置中也可能出现。我们修改了由核子EDM耦合诱导的超新星（SN）轴轴发射，并因此改进了SN 1987a结合。此外，我们从未来的银河系中计算出轴突通量，并表明它可能在大型地下中微子检测器（例如拟议的Hyper-Kamiokande）中产生特殊且可能可检测到的伽马射线信号。检测这种信号的可能性提供了一种方法，可以搜索与Caspere互补的振荡核EDM，而不依赖于轴是暗物质中很大的组成部分的假设。此外，如果SN的轴轴产生可观察到的信号，则它们还可能导致在未来的宇宙调查中可观察到的宇宙学外辐射数量。
We consider axions coupled to nucleons and photons only through the nucleon electric-dipole moment (EDM) portal. This coupling is a model-independent feature of QCD axions, which solve the strong CP problem, and might arise as well in more general axion-like particle setups. We revise the supernova (SN) axion emission induced by the nucleon EDM coupling and refine accordingly the SN 1987A bound. Furthermore, we calculate the axion flux from a future Galactic SN and show that it might produce a peculiar and potentially detectable gamma-ray signal in a large underground neutrino detector such as the proposed Hyper-Kamiokande. The possibility to detect such a signal offers a way to search for an oscillating nucleon EDM complementary to CASPERe, without relying on the assumption that axions are a sizeable component of the dark matter. Furthermore, if axions from SN produce an observable signal, they could also lead to an amount of cosmological extra-radiation observable in future cosmic surveys.
