论文标题
电子离子对撞机的重中性瘦素
Heavy Neutral Leptons at the Electron-Ion Collider
论文作者
论文摘要
Brookhaven国家实验室的未来电子离子对撞机（EIC）及其阐明核结构的主要能力将为探测超出标准模型与Electroweak部门的标准模型的新机会。这种新物理学的最佳动机例子包括新的重型中性瘦素（HNLS），它们可能在中微子质量产生和易莱顿数字中起关键作用。我们研究了EIC搜索HNL的能力，由于它们与光中微子的混合，可以通过充电的电流相互作用在电子普罗顿碰撞中产生。我们发现，凭借EIC设计能量和集成的发光度，人们能够在1 GEV $ -100 $ GEV的质量范围内探测，将角度混合到$ 10^{ - 4} -10^{ - 3} $的订单，通过提示衰减，$ 10^{ - 6} { - 6} - 6} -10^-10^ - 10^ - 10^{-4} $ aptivaut via via。我们还考虑了无形模式，其中HNL未被发现或腐烂到黑暗扇区颗粒。人们可能有可能探测较重的HNL，以在窗口中混合角度$ 10^{ - 3} -10^{ - 2} $，提供的SM背景系统可以控制在控制之下。这些搜索是与其他HNL探针相辅相成的，例如无中微子的双$β$衰减，介子衰减，固定目标和高能撞机实验。
The future Electron-Ion Collider (EIC) at Brookhaven National Laboratory, along with its primary capacity to elucidate the nuclear structure, will offer new opportunities to probe physics beyond the Standard Model coupled to the electroweak sector. Among the best motivated examples of such new physics are new heavy neutral leptons (HNLs), which are likely to play a key role in neutrino mass generation and lepton number violation. We study the capability of the EIC to search for HNLs, which can be produced in electron-proton collisions through charged current interactions as a consequence of their mixing with light neutrinos. We find that, with the EIC design energy and integrated luminosity, one is able to probe HNLs in the mass range of 1 GeV$-100$ GeV with mixing angles down to the order of $10^{-4} - 10^{-3}$ through the prompt decay, and $10^{-6} - 10^{-4}$ via the displaced decay signatures. We also consider the invisible mode where an HNL is undetected or decaying to dark sector particles. One could potentially probe heavy HNLs for mixing angles in the window $10^{-3}-10^{-2}$, provided SM background systematics can be brought under control. These searches are complementary to other probes of HNLs, such as neutrino-less double-$β$ decay, meson decay, fixed-target, and high-energy collider experiments.
