论文标题
W-boson质量和电偶极矩的颜色量表
W-boson mass and electric dipole moments from colour-octet scalars
论文作者
论文摘要
Manohar模型中的新彩色标量通过一环和两环图在参考文献[1]中计算出对中子的电偶极矩（EDM）的巨大贡献。中立标量的贡献取消了群众的退化值，其差异与斜参数$ s $和$ t $有关。 Manohar-Wise模型能够解释CDF协作发布的$ W $ -BOSON质量的最新价值。但是，我们表明，在该模型中，质量总退化的情况很大，其参数空间在考虑单位性界限时大大降低。
New coloured scalars in the Manohar-Wise model give sizeable contributions to the Electric Dipole Moment (EDM) of the neutron through one-loop and two-loop diagrams, computed in Reference [1]. Contributions from neutral scalars cancel out for degenerate values of the masses, whose difference is related to the oblique parameters $S$ and $T$. The Manohar-Wise model is able to explain the recent value of the $W$-boson mass published by the CDF collaboration. We show, however, that the case of total degeneracy of masses is strongly disfavoured in this model, whose parameter space is substantially reduced when considering also unitarity bounds.
