本报告将介绍了基于缪子散射的科学研究项目PKMu (Probing and Knocking with Muons)及其近期进展, 该项目旨在利用缪子探索超越标准模型的潜在物理现象. 在缪子散射探测暗物质研究中, 项目利用阻性板气体室等高精度缪子径迹探测器, 建立宇宙射线缪子散射实验平台, 开展了为期63天直接探测实验, 通过详细的宇宙射线散射模拟与实测对比, 揭示了宇宙射线多组分对散射信号的贡献, 对缪子和低速暗物质的散射截面给出实测限制; 在缪子散射对暗玻色子与带电轻子味破坏的研究中, 结合高原子序数靶材和缪子-电子散射的实验设计, 模拟结果展现出在亚GeV质量区间及独立参数空间探索中的独特优势. 此外, 对缪子-电子散射中的量子纠缠与Bell不等式进行了模拟分析, 模拟结果显示在GeV能区具备良好的观测条件. 未来, 也将在国内国际缪子源上进行更深入的缪子散射研究....
Recent CMS analyses report an excess in the diphoton-plus-b ̄b channel, indicative of a heavy resonance around 650GeV decaying into a Standard Model (SM)-like Higgs boson and a lighter scalar near 95GeV. The case for a 95GeV state is further supported by diphoton excesses observed by both CMS and ATLAS, as well as a b ̄b excess previously observed at the Large Electron-Position collider. This...
The ordering of neutrino masses remains an open question in particle physics. While upcoming oscillation experiments aim to resolve this using low-energy probes, complementary approaches are needed to test neutrino mass generation more broadly. In this talk, I will show how high-energy collider experiments can provide such a probe within the minimal Type-I seesaw framework. Focusing on a...
