We explore the phenomenology of the Georgi-Machacek model extended with two Higgs doublets and vector fermion doublets invariant under $SU{(2)}_L\times U{(1)}_Y\times {\mathcal{Z}}_4\times {\mathcal{Z}}_2$. The ${\mathcal{Z}}_4$ symmetry is broken spontaneously while the imposed ${\mathcal{Z}}_2$ symmetry forbids triplet fields to generate any vacuum expectation value and leading to an inert dark sector providing a viable candidate for dark matter and generate neutrino mass radiatively. Another interesting feature of the model is leptogenesis arising from decay of vector-like fermions. A detailed study of the model is pursued in search for available parameter space consistent with the theoretical and experimental observations for dark matter, neutrino physics, flavor physics, matter-antimatter asymmetry in the Universe.

我们探索了在以下条件下扩展了两个希格斯二重态和矢量费米子二重态不变的Georgi-Machacek模型的现象学 $\mathrm{小号}ü{（\mathrm{2个}）}_{\mathrm{大号}}\times ü{（\mathrm{1个}）}_{ÿ}\times {\mathcal{ž}}_4\times {\mathcal{ž}}_{\mathrm{2个}}$。这${\mathcal{ž}}_4$ 对称性在被强加的同时自发地被破坏 ${\mathcal{ž}}_{\mathrm{2个}}$对称性禁止三重态场产生任何真空期望值，并导致惰性暗区为暗物质提供可行的候选物，并产生辐射的中微子质量。该模型的另一个有趣特征是由类似载体的费米子衰变引起的瘦素生成。对该模型进行了详细的研究，以寻找与宇宙中暗物质，中微子物理学，风味物理学，物质-反物质不对称性的理论和实验观察相一致的可用参数空间。