论文标题
在标准模型的复杂单线扩展中，CP对重力波的侵略影响具有退化标量
CP-violating effects on gravitational waves in a complex singlet extension of the Standard Model with degenerate scalars
论文作者
论文摘要
我们在标准模型中检查了CP侵略性对电动相位转换（EWPT）的效果，其中一个复杂的单线标量为重点，尤其是在额外标量的质量接近125 GEV的情况下。如此高的质量退化使对撞机标准模型中的对撞机签名类似，而当前的实验数据无法将它们与标准模型预测区分开。我们利用简化的标量潜力来理解CP违规对EWPT的影响。然后，使用热重新召集的一环有效电位进行全数。作为现象学后果，还评估了一阶EWPT的重力波。我们发现，随着CP侵略效应的较大，一阶EWPT的强度会变得较弱。结果，引力波幅度因违反CP的大小而减小。未来的引力波实验可能会揭示出Singlet标量扇区中的CP违规以及由于高质量退化而导致的实验盲点。
We examine CP-violating effects on electroweak phase transition (EWPT) in the standard model with a complex singlet scalar focusing particularly on a scenario where additional scalars have masses close to 125 GeV. Such a high mass degeneracy makes collider signatures in the scenario standard model like, and current experimental data cannot distinguish them from the standard model predictions. We utilize a simplified scalar potential to understand impacts of CP violation on EWPT qualitatively. Then, one-loop effective potential with a thermal resummation is employed for full numerical evaluations. As a phenomenological consequence, gravitational waves from the first-order EWPT are also evaluated. We find that the strength of the first-order EWPT would get weaker as the CP-violating effect becomes larger. As a result, gravitational wave amplitudes are diminished by the size of the CP violation. Future gravitational wave experiments may shed light on CP violation in the singlet scalar sector as well as the experimental blind spot due to the high mass degeneracy.
