论文标题
在未来的FCC-EE中搜索长寿命的粒子
Searches for Long-Lived Particles at the Future FCC-ee
论文作者
论文摘要
未来圆形对撞机FCC-EE的电子峰值阶段是希格斯，顶部，电子山脉和风味物理的边界工厂。它旨在在CERN建造的100公里圆形隧道中操作，并将作为迈向$ \ geq $ 100 TEV Proton-Proton碰撞的第一步。除了基本独特的希格斯计划外，它还提供了有力的机会，可以发现直接或间接的物理证据以外的标准模型。 直接搜索FCC-EE的长寿命颗粒可能在高亮度$ z $运行中特别肥沃，其中预计将为具有两个交互点的配置生产$ 5 \ times 10^{12} $ $ z $ bosons。在非常干净的实验条件下，希格斯玻色子，$ W $玻色子和顶级夸克的高统计数据可能会在其他碰撞能量中提供更多的机会。本文突出显示和研究了三种在FCC-EE的物理病例：重型中性瘦素（HNLS），轴突样颗粒（ALP）和Higgs Boson的异国衰变。这些搜索激发了实验条件和分析技术的开箱即用优化，这可能会改善其他物理搜索。
The electron-positron stage of the Future Circular Collider, FCC-ee, is a frontier factory for Higgs, top, electroweak, and flavour physics. It is designed to operate in a 100 km circular tunnel built at CERN, and will serve as the first step towards $\geq$ 100 TeV proton-proton collisions. In addition to an essential and unique Higgs program, it offers powerful opportunities to discover direct or indirect evidence of physics beyond the Standard Model. Direct searches for long-lived particles at FCC-ee could be particularly fertile in the high-luminosity $Z$ run, where $5\times 10^{12}$ $Z$ bosons are anticipated to be produced for the configuration with two interaction points. The high statistics of Higgs bosons, $W$ bosons and top quarks in very clean experimental conditions could offer additional opportunities at other collision energies. Three physics cases producing long-lived signatures at FCC-ee are highlighted and studied in this paper: heavy neutral leptons (HNLs), axion-like particles (ALPs), and exotic decays of the Higgs boson. These searches motivate out-of-the-box optimization of experimental conditions and analysis techniques, that could lead to improvements in other physics searches.
