论文标题
$ z $玻色子混合和$ W $玻色子的质量
$Z$ boson mixing and the mass of the $W$ boson
论文作者
论文摘要
我们探索了解释$ W $玻色子块的可能性，并在树级上与$ z $玻色子混合了额外的仪表。额外的玻色子与$ z $玻色子的混合将改变$ z $玻色子质量的表达，从而改变$ w $ boson质量。我们在这项工作中探索了两个模型。我们发现，在衍生门户的暗物质模型中，有一些参数空间可以给出观察到的$ W $玻色子质量以及观察到的暗物质遗物密度。这些参数空间还可以实现Electroweak倾斜参数和暗物质间接检测的约束。在U（1）扩展模型中，Extra Boson和$ B $ Boson之间的动力学混合也可以给观察到的$ W $玻色子质量。但是，为了实现Electroweak倾斜参数适合U（1）模型中的动力学混合，只能贡献$ 27〜 \ MATHRM {MEV} $额外的质量，标准模型$ W $ boson质量。这两种模型均表示额外的矢量玻色子，最佳拟合质量约为$ 120〜 \ mathrm {gev} $。
We explore the possibility of explaining the $W$ boson mass with an extra gauge boson mixing with the $Z$ boson at tree level. Extra boson mixing with the $Z$ boson will change the expression of the $Z$ boson mass, thus altering the $W$ boson mass. We explore two models in this work. We find that in the Derivative Portal Dark Matter model, there are parameters space which can give the observed $W$ boson mass, as well as the observed Dark Matter relic density. These parameters space can also fulfill the constraints from the electroweak oblique parameters and Dark Matter indirect detection. In the U(1) extension model, the kinetic mixing between extra boson and $B$ boson can also give the observed $W$ boson mass. However, to fulfill electroweak oblique parameters fit the kinetic mixing in the U(1) model can only contribute about $27~\mathrm{MeV}$ extra mass to the Standard Model $W$ boson mass. Both models indicate the extra vector boson with the best fit mass around $120~\mathrm{GeV}$.
