论文标题
在重力波，暗物质和对撞机信号之间的相互作用，singlet标量扩展II型Seesaw模型
Interplay among gravitational waves, dark matter and collider signals in the singlet scalar extended type-II seesaw model
论文作者
论文摘要
我们研究了微小中微子质量，暗物质（DM）的同时解释和观察到的宇宙中观察到的重子不对称，以$ z_3 $ - symmetric-Symmetric复杂的单重型单线标量标量表型扩展类型-II II SeeSAW模型。复杂的单线标量扮演DM的角色。分析模型的热历史，我们确定了可以在早期宇宙中产生一阶电子相变（FOEWPT）的参数空间的区域，并且可以在未来的基于空间/地面的GW实验中检测到所得的随机重力波（GW）。首先，我们发现轻单元标量确实有利于泡沫。在我们的研究中，我们选择了参数空间的II型Seesaw部分，以使轻质三重量表标量（尤其是双重带电的标量）从大型强子对撞机（LHC）的规范搜索中逃脱出强度的界限。但是，参数空间的相关部分仅由于强烈的SM Doublet-Triplet相互作用而发生，在该参数空间中，与SM样希格斯衰减到一对光子已经张力，该光子已经排除了该参数空间的大部分。另一方面，Xenon-1T和Panda-4T的最新独立于自旋的DM直接检测约束消除了与黑暗扇区辅助FOEWPT方案相关的大量参数空间，并且只有在复杂的标量DM显着不足时才有可能。简而言之，我们从分析得出的结论是，在不久的将来，在HL-LHC和/或各种DM实验中缺少新物理学将严重限制在将来的GW实验中检测随机GW的前景，并且将排除该模型中电动eak baryogenese openogeness的可能性。
We study the prospect of simultaneous explanation of tiny neutrino masses, dark matter (DM), and the observed baryon asymmetry of the Universe in a $Z_3$-symmetric complex singlet scalar extended type-II seesaw model. The complex singlet scalar plays the role of DM. Analyzing the thermal history of the model, we identify the region of the parameter space that can generate a first-order electroweak phase transition (FOEWPT) in the early Universe, and the resulting stochastic gravitational waves (GW) can be detected at future space/ground-based GW experiments. First, we find that light triplet scalars do favor an FOEWPT. In our study, we choose the type-II seesaw part of the parameter space in such a way that light triplet scalars, especially the doubly charged ones, evade the strong bounds from their canonical searches at the Large Hadron Collider (LHC). However, the relevant part of the parameter space, where FOEWPT can happen only due to strong SM doublet-triplet interactions, is in tension with the SM-like Higgs decay to a pair of photons, which has already excluded the bulk of this parameter space. On the other hand, the latest spin-independent DM direct detection constraints from XENON-1T and PANDA-4T eliminate a significant amount of parameter space relevant for the dark sector assisted FOEWPT scenarios, and it is only possible when the complex scalar DM is significantly underabundant. In short, we conclude from our analysis that the absence of new physics at the HL-LHC and/or various DM experiments in the near future will severely limit the prospects of detecting a stochastic GW at future GW experiments and will exclude the possibility of electroweak baryogenesis within this model.
