论文标题
II型Dirac Seesaw带有可观察的$Δn_ {\ rm eff} $在W-Mass异常的情况下
Type II Dirac Seesaw with Observable $ΔN_{\rm eff}$ in the light of W-mass Anomaly
论文作者
论文摘要
我们提出了一个针对光DIRAC中微子的II型SEESAW模型，以通过CDF协作为最近报道的W Boson质量的异常提供了解释，其统计意义为$7σ$。在最小模型中，由于真实标量三重态的真空期望值，在树高度获得了W玻色子质量所需的增强，该预期值也在产生光dirac中微子质量中起作用。根据新引入的粒子的耦合和质量，我们可以以右手中微子的形式具有热或非热生成的相对论自由度$Δn_{\ rm eff} $，可以在未来的宇宙学实验中观察到。将模型扩展到辐射的迪拉克seesaw方案也可以容纳暗物质和Lepton异常磁矩。
We propose a type II seesaw model for light Dirac neutrinos to provide an explanation for the recently reported anomaly in W boson mass by the CDF collaboration with $7σ$ statistical significance. In the minimal model, the required enhancement in W boson mass is obtained at tree level due to the vacuum expectation value of a real scalar triplet, which also plays a role in generating light Dirac neutrino mass. Depending upon the couplings and masses of newly introduced particles, we can have thermally or non-thermally generated relativistic degrees of freedom $ΔN_{\rm eff}$ in the form of right handed neutrinos which can be observed at future cosmology experiments. Extending the model to a radiative Dirac seesaw scenario can also accommodate dark matter and lepton anomalous magnetic moment.
