We consider a spin-$\frac{3}{2}$ particle and show that with a Planck reduced coupling, we can obtain a sufficiently long lifetime making the spin-$\frac{3}{2}$ particle a good dark matter candidate. We show that this dark matter candidate can be produced during inflationary reheating through the scattering of Standard Model particles. The relic abundance as determined by {} and other experimental measurements is attained for reasonable values of the reheating temperature $T_{\rm RH} \gtrsim 10^{8}$ GeV. We consider two possible gauge invariant couplings to the extended Standard Model. We find a large range of masses are possible which respect the experimental limits on its decay rate. We expect smoking gun signals in the form of a monochromatic photon with a possible monochromatic neutrino, which can be probed in the near future in IceCube and other indirect detection experiments.

中文翻译：

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自旋3/2暗物质衰减的情况

我们考虑旋转$\frac{3}{2}$ 粒子，并表明通过普朗克减少的耦合，我们可以获得足够长的寿命，从而使自旋$\frac{3}{2}$粒子是一个好的暗物质候选者。我们证明了这种暗物质候选物可以通过标准模型颗粒的散射在膨胀再加热过程中产生。对于合理的再加热温度$ T _ {\ rm RH} \ gtrsim 10 ^ {8} $ GeV，可以达到{}和其他实验测量所确定的文物丰度。我们考虑到扩展标准模型的两种可能的规范不变耦合。我们发现有可能考虑到其衰减速率的实验极限的大范围质量。我们期望吸烟枪信号以可能带有单色中微子的单色光子形式出现，可以在不久的将来在IceCube和其他间接检测实验中进行探测。