We propose a model for dark matter and dark radiation, based on a strongly-coupled dark \(\mathrm{SU}(5)\) gauge theory with fundamental and decuplet dark-quarks. The model supports light dark-baryons, respecting the chiral symmetry, which are electrically neutral but have electromagnetic form factors, and also a light dark-axion. Since the coupling of dark baryons to the (electrically charged) standard model particles is inversely proportional to the square of the confinement scale, dark baryons become either hot dark matter or cold dark matter, depending on when the dark color confines. For the confinement scale \(\Lambda \sim 10\)–\(10^3~\mathrm{GeV}\) the dark baryons of mass about \( 1~\mathrm{GeV}\)–\(1~\mathrm{MeV}\) become cold dark matter with naturally small magnetic moment and give the correct relic abundance.

我们基于具有基本和十重暗夸克的强耦合暗\（\ mathrm {SU}（5）\）规范理论，提出了暗物质和暗辐射的模型。该模型支持浅暗重子，尊重手性对称性，它们是电中性的，但具有电磁形状因数，还支持浅暗轴。由于暗重子与（带电的）标准模型粒子的耦合与限制尺度的平方成反比，因此暗重子将变为热暗物质或冷暗物质，具体取决于暗区的限制时间。对于约束尺度\（\ Lambda \ sim 10 \） – \（10 ^ 3〜\ mathrm {GeV} \），质量暗重子约\（1〜\ mathrm {GeV} \） –\（1〜\ mathrm {MeV} \）变成冷暗物质，磁矩自然很小，并给出正确的文物丰度。