arXiv 1609.010182016-09-11hep-ph

II辐射跷跷板模型：从暗物质探测到LHC特征

Testing Type II Radiative Seesaw Model: from Dark Matter Detection to LHC Signatures

Shu-Yuan Guo, Zhi-Long Han, Yi Liao

备注：: v1: 27 pages, 10 figures, 5 tables; v2: added a few refs, without other changes
发表信息：: Phys. Rev. D 94, 115014 (2016)
DOI：: 10.1103/PhysRevD.94.115014

摘要：

分析了中微子质量与暗物质（DM）在单圈水平上相关的第二类辐射跷跷板的可测性。在DM残余密度、直接和间接探测以及不可见Higgs衰变的约束下，我们发现了DM质量$M_{s_1}$的三个可能区域：（1）$M_{s_1}\sim M_h/2$的Higgs共振区，（2）$M_{s_1}\sim M_h$的Higgs区，（3）$M_{s_2}\sim M_{s_1}$的共湮灭区。这里，$s_{1,2}$是两个标量单峰，较轻的$s_1$是DM候选。基于DM性质和直接对撞机约束，我们选择了三个基准点来说明该模型在LHC上的可测性。我们在13（14）TeV LHC上对四轻子和三轻子的特征进行了详细的模拟。虽然这两个特征在所有基准点上都被发现是有希望的，但三轻子特征甚至更好：有可能达到积分光度为100/fb的$5σ$显著性。

英文摘要：

We analyse the testability of the type II radiative seesaw in which neutrino mass and dark matter (DM) are related at one-loop level. Under the constraints from DM relic density, direct and indirect detection, and invisible Higgs decays, we find three possible regions of DM mass $M_{s_1}$ that can survive the present and even the future experiments: (1) the Higgs resonance region with $M_{s_1}\sim M_h/2$, (2) the Higgs region with $M_{s_1}\sim M_h$, and (3) the coannihilation region with $M_{s_2}\sim M_{s_1}$. Here $s_{1,2}$ are two scalar singlets with the lighter $s_1$ being the DM candidate. Based on DM properties and direct collider constraints, we choose three benchmark points to illustrate the testability of this model at LHC. We perform a detailed simulation of the four-lepton and tri-lepton signatures at 13 (14) TeV LHC. While both signatures are found to be promising at all benchmark points, the tri-lepton one is even better: it is possible to reach the $5σ$ significance with an integrated luminosity of 100/fb.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文