论文标题
伪 - nambu-goldstone暗物质，来自非亚伯仪对称性
Pseudo-Nambu-Goldstone Dark Matter from Non-Abelian Gauge Symmetry
论文作者
论文摘要
我们提出了一个基于其他非亚伯仪对称$ su（2）_d $的伪-Nambu-Goldstone玻色子（PNGB）暗物质（DM）模型。量规对称$ su（2）_d $通过非呈现真空期望值$ su（2）_d $ doublet和Triplet标量字段自发地破坏了全球托管对称$ u（1）_v $。由于确切的全局对称$ u（1）_v $，最轻的$ u（1）_v $带电粒子变得稳定。我们假设模型中最轻的电荷粒子是带电的复合物PNGB，我们认为这是DM。它避免了由于NGB的特性而引起的当前DM直接检测实验的强大限制。我们发现，当DM质量大于HIGGS质量的一半时，可以再现DM的测得的能量密度，而下限通常来自DM无形衰变的约束，而DM直接检测实验的上限取决于模型参数。
We propose a pseudo-Nambu-Goldstone boson (pNGB) dark matter (DM) model based on an additional non-Abelian gauge symmetry $SU(2)_D$. The gauge symmetry $SU(2)_D$ is spontaneously broken to a global custodial symmetry $U(1)_V$ via the nonvanishing vacuum expectation values of $SU(2)_D$ doublet and triplet scalar fields. Due to the exact global symmetry $U(1)_V$, the lightest $U(1)_V$ charged particle becomes stable. We assume that the lightest charged particle in the model is the charged complex pNGB, which we regard as DM. It avoids the strong constraints from current DM direct detection experiments due to the property of NGB. We find that the measured energy density of DM can be reproduced when the DM mass is larger than the half of the Higgs mass, where the lower limit generally comes from the constraint of DM invisible decay and the upper limit from DM direct detection experiments depends on the model parameters.
