论文标题
通过单色正电子的极化，在两体抗疫苗中搜索黑暗区域
Searching for the dark sector in two-body anti-muon decay with the polarization of monochromatic positrons
论文作者
论文摘要
$μ^+ \ to e^+ x $衰减，其中$ x $是黑暗扇区的玻色子，在黑暗扇区相互作用的规模上提供了最强的可用界限之一。 $ x $玻色子可以是斧头或深色光子。我们表明，在两个黑暗扇区门户之间，在两个黑暗扇区门口之间，在置信度水平为99％的情况下，在无质量的黑暗光子的情况下，以99％的置信度为99％。取而代之的是，巨大的自旋-1，尺寸4黑暗门户不能与轴突状的情况区分开。我们还讨论了$ x $玻色子是一个巨大的自旋2粒子的可能性。
The $μ^+ \to e^+ X$ decay, where $X$ is a dark sector boson, provides one of the strongest available bounds on the scale of dark sector interactions. The $X$ boson can be an axion or a dark photon. We show that the concurrent determination of the anti-muon and positron polarizations makes possible to distinguish with a confidence level of 99% between the two dark sector portals with as few as 6 observed events in the case of the massless dark photon. Instead, the massive spin-1, dimension 4 dark portal cannot be distinguished from the axion-like case. We also discuss the possibility that the $X$ boson be a massive spin-2 particle.
