We have studied phenomenological implications of several family non-universal U(1)′ sub-models in the U(1)′-extended Minimal Supersymmetric Standard Model (UMSSM) possessing an extra down quark type exotic field. In doing this, we have started by enforcing anomaly cancellation criteria to generate a number of solutions in which the extra U(1)′ charges of the particles are treated as free parameters. We have then imposed existing bounds coming from colliders and astrophysical observations on the assumed sub-models and observed that current limits dictate certain charge orientations, for instance, $Q_{H_u}\sim Q_{H_d}$ is preferred in general and the charge of the singlet $Q_S$ cannot be very small ($|Q_S|>$ 0.4) even if any of the charges is allowed to take any value within the $[-1,1]$ range. We have finally studied the potential impact of such non-universal charges on $Z^{\prime }$ mediated processes and made predictions for existing and future experiments. It has turned out that UMSSMs with or without the presence of light exotic quarks can yield distinguishable signatures if non-universal charges are realised in the leptonic sector of such models.

我们研究了 U(1)' 扩展最小超对称标准模型 (UMSSM) 中几个家族非普遍 U(1)' 子模型的现象学含义，该模型具有额外的下夸克型奇异场。为此，我们首先强制执行异常消除标准，以生成许多解决方案，其中粒子的额外 U(1)' 电荷被视为自由参数。然后，我们将来自对撞机和天体物理观测的现有边界强加给假设的子模型，并观察到电流限制决定了某些电荷方向，例如，${问}_{H_{你}}～{问}_{H_d}$ 一般首选，单线态电荷 ${问}_{秒}$ 不能很小（$|{问}_{秒}|>$ 0.4) 即使任何费用被允许在 $[-1,1]$范围。我们终于研究了这种非普遍性收费对$Z^{\prime }$介导的过程并对现有和未来的实验做出预测。事实证明，如果在此类模型的轻子扇区中实现了非普遍电荷，无论是否存在轻的奇异夸克，UMSSM 都可以产生可区分的特征。