论文标题
重新检查Xenon1t过量的太阳轴解释
Re-examining the Solar Axion Explanation for the XENON1T Excess
论文作者
论文摘要
Xenon1t合作观察到已知背景上的电子后坐力事件的过量$ 5〜 \ mathrm {kev} $，这可能起源于超出标准模型物理学。太阳轴是一个动机良好的模型，已提出解释过量的模型，尽管它与天体物理观察有张力。从太阳传递的轴可以通过轴 - 电子耦合在Xenon原子中的电子吸收。同时，它们还可以通过轴 - 光子耦合通过原子通过原子散射，该轴偶联发射光子并模仿电子后坐力信号。我们发现后一个过程不能忽略。在包括检测中通过iNverse Primakoff产生的$ \ rm {keV} $光子之后，可以大大降低带有天体物理约束的张力。我们还探讨了涉及其他新物理学的场景，以进一步缓解天体物理界的张力。
The XENON1T collaboration has observed an excess in electronic recoil events below $5~\mathrm{keV}$ over the known background, which could originate from beyond-the-Standard-Model physics. The solar axion is a well-motivated model that has been proposed to explain the excess, though it has tension with astrophysical observations. The axions traveled from the Sun can be absorbed by the electrons in the xenon atoms via the axion-electron coupling. Meanwhile, they can also scatter with the atoms through the inverse Primakoff process via the axion-photon coupling, which emits a photon and mimics the electronic recoil signals. We found that the latter process cannot be neglected. After including the $\rm{keV}$ photon produced via inverse Primakoff in the detection, the tension with the astrophysical constraints can be significantly reduced. We also explore scenarios involving additional new physics to further alleviate the tension with the astrophysical bounds.
