论文标题
低规模$ u（1）_x $量规对称作为暗物质，中微子质量和风味异常的起源
Low Scale $U(1)_X$ Gauge Symmetry as an Origin of Dark Matter, Neutrino Mass and Flavour Anomalies
论文作者
论文摘要
我们研究了带有轻量表的标准模型的通用嗜血液$ u（1）_x $扩展。 Lepton普遍性（LUV）在半雌科$ b \ to s \ ell \ ell $衰减，穆恩异常磁矩以及Leptonic质量和混合的起源的指导下。异常取消条件需要在模型中添加新的手性费米子，当它通过额外的$ \ Mathcal {Z} _2 _2 $对称性稳定时，该条件在模型中充当暗物质（DM）候选。从我们的分析中，我们显示了两个具有相似粒子含量的不同可能的模型，从而导致中微子质量起源和其他现象学。拟议的模型还具有解决$ b \ to c \ellν_{\ ell} $衰减中的异常结果，例如$ r（d），r（d^*）$，电子异常磁矩以及Kaon扇区中最近的Koto异常。我们还讨论了我们的模型的不同可能的对撞机签名，这些签名将来可以测试。
We study a generic leptophilic $U(1)_X$ extension of the standard model with a light gauge boson. The $U(1)_X$ charge assignments for the leptons are guided by lepton universality violating (LUV) observables in semileptonic $b \to s\ell\ell$ decays, muon anomalous magnetic moment and the origin of leptonic masses and mixing. Anomaly cancellation conditions require the addition of new chiral fermions in the model, one of which acts as a dark matter (DM) candidate when it is stabilised by an additional $\mathcal{Z}_2$ symmetry. From our analysis, we show two different possible models with similar particle content that lead to quite contrasting neutrino mass origin and other phenomenology. The proposed models also have the potential to address the anomalous results in $b\to c\ellν_{\ell}$ decays like $R(D), R(D^*)$, electron anomalous magnetic moment and the very recent KOTO anomaly in the kaon sector. We also discuss different possible collider signatures of our models which can be tested in future.
