We consider a model with Sp dark gauge group and a scalar field in the fundamental representation, which leads to two co-stable DM candidates at the perturbative level thanks to a global U(1) accidental symmetry. After gauge confinement at low energy scale, only one of the two candidates is still stable. We compute the DM relic abundance by solving the Boltzmann equations numerically. The presence of light dark glueballs gives extra cosmological effects and can affect Higgs physics. We study the DM phenomenology, providing the predictions for direct and indirect detection (including the Sommerfeld enhancement). We show that the model predicts a slightly suppressed indirect detection cross section in comparison to the usual WIMPs paradigm.

中文翻译：

---

标量 Sp($$ \mathcal{N} $$) 规范动力学中的暗物质

我们在基本表示中考虑具有 Sp 暗规范群和标量场的模型，由于全局 U(1) 偶然对称性，这导致在微扰水平上有两个共稳定 DM 候选者。在低能量尺度下规范约束后，两个候选中只有一个仍然稳定。我们通过数值求解玻尔兹曼方程来计算 DM 遗迹丰度。浅色胶球的存在会产生额外的宇宙学效应，并会影响希格斯物理学。我们研究 DM 现象学，为直接和间接检测（包括 Sommerfeld 增强）提供预测。我们表明，与通常的 WIMP 范例相比，该模型预测的间接检测横截面略有抑制。