论文标题
LHC在有效领域理论中长期寿命的无菌中微子
Long-lived Sterile Neutrinos at the LHC in Effective Field Theory
论文作者
论文摘要
我们在中微子扩展的标准模型有效田间理论（$ν$ smeft）的框架中研究了对大型强子对撞机（LHC）对无菌中微子进行流离失所的vertex搜索的前景。无菌中微子的产生和衰减可以通过弱电流中的标准活动 - 螺旋中微子混合以及通过脱成新物理学引起的高维操作员进行。如果无菌中微子是长寿的，它们的衰变会导致可以重建的位移顶点。我们研究了Atlas/CMS检测器的搜索敏感性，未来的远探测器实验：AL3X，Anubis，codex-B，Faser，Mathusla和Moedal-Mapp，以及拟议的固定目标实验船。我们研究了无菌中微子主要是通过稀有魅力和底部介子通过最小的混合和/或尺寸 - 六六杆操作员在$ν$ smeft lagrangian中产生的场景。我们执行模拟，以确定高光度LHC实验在探测EFT操作员时的潜在覆盖范围，发现这些实验与其他搜索非常有竞争力。
We study the prospects of a displaced-vertex search of sterile neutrinos at the Large Hadron Collider (LHC) in the framework of the neutrino-extended Standard Model Effective Field Theory ($ν$SMEFT). The production and decay of sterile neutrinos can proceed via the standard active-sterile neutrino mixing in the weak current, as well as through higher-dimensional operators arising from decoupled new physics. If sterile neutrinos are long-lived, their decay can lead to displaced vertices which can be reconstructed. We investigate the search sensitivities for the ATLAS/CMS detector, the future far-detector experiments: AL3X, ANUBIS, CODEX-b, FASER, MATHUSLA, and MoEDAL-MAPP, and at the proposed fixed-target experiment SHiP. We study scenarios where sterile neutrinos are predominantly produced via rare charm and bottom mesons decays through minimal mixing and/or dimension-six operators in the $ν$SMEFT Lagrangian. We perform simulations to determine the potential reach of high-luminosity LHC experiments in probing the EFT operators, finding that these experiments are very competitive with other searches.
