论文标题
在夸克混合矩阵与矢量夸克上的约束
Constraints on the quark mixing matrix with vector-like quarks
论文作者
论文摘要
虽然手性的第四代夸克几乎可以从大型强子对撞机的希格斯玻色子产生和衰减的数据中排除，但类似矢量的夸克仍然是扩展标准模型费米子部门的可行选择。这样的延伸不会遭受任何异常的影响，并且很容易通过斜型电子参数带来的约束。我们考虑使用$ su（2）$ singlet和Doublet矢量样的夸克（Quarks）的最小扩展，它们可能与标准模型夸克（Standard Model Quarks）混合在一起，或者最多两种。新的混合角度和相位的约束是从几个$ΔB= 1 $和$ΔB= 2 $过程中获得的。
While a chiral fourth generation of quarks is almost ruled out from the data on Higgs boson production and decay at the Large Hadron Collider, vector-like quarks are still a feasible option to extend the fermionic sector of the Standard Model. Such an extension does not suffer from any anomalies and easily passes the constraints coming from oblique electroweak parameters. We consider such minimal extensions with $SU(2)$ singlet and doublet vector-like quarks that may mix with one, or at the most two, of the Standard Model quarks. Constraints on the new mixing angles and phases are obtained from several $ΔB = 1$ and $ΔB = 2$ processes.
