论文标题
MUON $ G-2 $和半乳房$ b $ $ p $在Bélanger-Delaunay-westhoff型号中使用仪表动力学混合
Muon $g-2$ and semileptonic $B$ decays in Bélanger-Delaunay-Westhoff model with gauge kinetic mixing
论文作者
论文摘要
在Bélanger，Delaunay和Westhoff（BDW）提出的模型中，一个新的部门由矢量般的费米子和两个复杂标量组成，并在额外的Abelian Symertry $ u（1）_x $下收取。在本文中，我们通过引入$ u（1）_x $与标准型号$ u（1）_y $ gauge字段之间的动力学混合来概括BDW模型。新的物理学对MUON异常磁矩和Wilson系数$ C_ {9,10}^{（'）} $的贡献是分析的。 We have explored the free parameter space of the model, taking into account various constraints on the muon $g-2$ using recent data from the E989 experiment at Fermilab, the lepton universality violation in terms of $R_K$ and $R_{K^*}$, and the branching ratios of the semileptonic decays, $B^+ \rightarrow K^+ μ^+ μ^-$ and $B^0 \ rightArrow k^{*0}μ^+μ^ - $，LEP和LHC搜索Sleptons和$ Z'$ Boson，以及扰动要求。确定了模型的可行参数区域。在存在量规动力学混合项的情况下，与消失的动力学混合相比，这些区域被增大并显着变形。在不久的将来，E989对预计灵敏度的实验将能够测试当前允许的参数区域的重要部分。
In the model proposed by Bélanger, Delaunay and Westhoff (BDW), a new sector consisted of vectorlike fermions and two complex scalars is charged under an extra Abelian symmetry $U(1)_X$. In this paper, we generalize the BDW model by introducing the kinetic mixing between the $U(1)_X$ and the standard model $U(1)_Y$ gauge fields. The new physics contributions to the muon anomalous magnetic moment and the Wilson coefficients $C_{9,10}^{(')}$ are obtained analytically. We have explored the free parameter space of the model, taking into account various constraints on the muon $g-2$ using recent data from the E989 experiment at Fermilab, the lepton universality violation in terms of $R_K$ and $R_{K^*}$, and the branching ratios of the semileptonic decays, $B^+ \rightarrow K^+ μ^+ μ^-$ and $B^0 \rightarrow K^{*0} μ^+ μ^-$, the LEP and LHC searches for sleptons and $Z'$ boson, as well as the perturbative requirement. The viable parameter regions of the model are identified. In the presence of the gauge kinetic mixing term, those regions are enlarged and significantly deformed in comparison to the case with vanishing kinetic mixing. In the near future, the E989 experiment with the projected sensitivity will be able to test significant parts of the currently allowed parameter regions.
