论文标题
暗区衰减的轻暗物质
Light dark matter from dark sector decay
论文作者
论文摘要
我们研究了通过其他暗区域颗粒的衰减，可以用正确的遗物密度产生光暗物质的可能性。我们在具有右撇子中微子，黑暗扇区单线标量和黑暗扇区单线费米恩的模型中研究了这种可能性。较重的黑暗区域单线标量的衰减产生了较轻的黑暗区域单线费米恩（Singlet Fermion），后者是暗物质候选者。我们表明，右暗物质遗物密度可以通过黑暗扇区单线标量的衰减产生。我们发现，黑暗区域单线费米的质量可以是GEV量表或MEV量表，而黑暗扇区单线费米昂的相互作用非常薄弱。黑暗扇区单线标量可以具有大量的GEV-TEV量表，并且与标准模型（SM）粒子的尺度相互作用较弱。因此，在这种情况下，暗物质与SM的相互作用要比弱相互作用要弱得多，但是暗区域仍然与SM的尺度相互作用弱。
We study the possibility that light dark matter can be produced with right relic density by the decay of other dark sector particles. We study this possibility in a model with right-handed neutrinos, a dark sector singlet scalar and a dark sector singlet fermion. The decay of the heavier dark sector singlet scalar gives rise to the lighter dark sector singlet fermion which serves as the dark matter candidate. We show that the right dark matter relic density can be produced by the decay of the dark sector singlet scalar. We find that the mass of the dark sector singlet fermion can be GeV scale or MeV scale and the interaction of the dark sector singlet fermion is very weak. The dark sector singlet scalar can have a mass of GeV-TeV scale and can have weak scale interactions with the Standard Model(SM) particles. So, in this scenario, dark matter has an interaction with the SM much weaker than the weak interaction, but the dark sector still has weak scale interaction with the SM.
