论文标题
评估尺寸5 Seesaw门户网站和外来希格斯对非点搜索搜索的影响
Assessment of the Dimension-5 Seesaw Portal and Impact of Exotic Higgs Decays on Non-Pointing Photon Searches
论文作者
论文摘要
Dimension-5 Seesaw门户网站是I型SEESAW模型，涉及无菌中微子状态的$ d = 5 $运算符，从而导致所有中微子与标准模型中性玻色子之间的新相互作用。在这项工作中，我们主要关注这些新运营商在GEV规模的含义上。特别是，我们重新计算了最大三体衰变的重中微子全衰减宽度。我们还回顾了偶极子操作员的界限，并在其系数上重新审视LEP的约束。最后，我们转向Higgs衰变的重中微子对生产，前者是长期寿命并分解成光子和光中微子。我们通过重新铸造两个地图集搜索非点的光子来探测此过程，从而显示出到达时间$t_γ$的预期事件分布和指向变量$ |Δz_γ| $。
The Dimension-5 Seesaw Portal is a Type-I Seesaw model extended by $d=5$ operators involving the sterile neutrino states, leading to new interactions between all neutrinos and the Standard Model neutral bosons. In this work we focus primarily on the implications of these new operators at the GeV-scale. In particular, we recalculate the heavy neutrino full decay width, up to three-body decays. We also review bounds on the dipole operator, and revisit LEP constraints on its coefficient. Finally, we turn to heavy neutrino pair production from Higgs decays, where the former are long-lived and disintegrate into a photon and a light neutrino. We probe this process by recasting two ATLAS searches for non-pointing photons, showing the expected event distribution in terms of arrival time $t_γ$ and pointing variable $|Δz_γ|$.
