Dent James B, Dutta Bhaskar, Newstead Jayden L, Thompson Adrian
Department of Physics, Sam Houston State University, Huntsville, Texas 77341, USA.
Mitchell Institute for Fundamental Physics and Astronomy, Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA.
Phys Rev Lett. 2020 Sep 25;125(13):131805. doi: 10.1103/PhysRevLett.125.131805.
We show that XENON1T and future liquid xenon (LXe) direct detection experiments are sensitive to axions through the standard g_{aγ}aFF[over ˜] operators due to inverse-Primakoff scattering. This previously neglected channel significantly improves the sensitivity to the axion-photon coupling, with a reach extending to g_{aγ}∼10^{-10} GeV^{-1} for axion masses up to a keV, thereby extending into the region of heavier QCD axion models. This result modifies the couplings required to explain the XENON1T excess in terms of solar axions, opening a large region of g_{aγ}-m_{a} parameter space that is not ruled out by the CAST helioscope experiment and reducing the tension with the astrophysical constraints. We explore the sensitivity to solar axions for future generations of LXe detectors that can exceed future helioscope experiments, such as IAXO, for a large region of parameter space.
我们表明，XENON1T以及未来的液氙（LXe）直接探测实验，由于逆普里马科夫散射，通过标准的(g_{aγ}aFF[\tilde{]})算符对轴子敏感。这个先前被忽视的通道显著提高了对轴子 - 光子耦合的灵敏度，对于质量高达keV的轴子，其探测范围延伸到(g_{aγ} \sim 10^{-10} GeV^{-1})，从而扩展到了更重的QCD轴子模型区域。这一结果改变了用太阳轴子解释XENON1T异常所需的耦合，开辟了一个大的(g_{aγ}-m_{a})参数空间区域，该区域未被CAST日镜实验排除，并降低了与天体物理约束的紧张关系。我们探索了未来几代液氙探测器对太阳轴子的灵敏度，对于很大一部分参数空间，这些探测器可以超过未来的日镜实验，如IAXO。
