基于HIAF集群的高强度缪子、反质子次级束产生及其物理研究展望

Producing high intensity muon, antiproton beams and related physical researches in the HIAF accelerators

粒子物理高强度前沿研究可以揭示超出标准模型的新物理规律,是探索高能标物理的灵敏探针.本文概述了基于缪子和反质子束流开展的部分高强度前沿关键科学问题,包括带电轻子味破缺、缪子反常磁矩的高精度测量等实验的物理目标和当前进展,展望了基于我国惠州强流重离子加速器装置(High Intensity heavy-ion Accelerator Facility, HIAF)集群开展缪子物理和反质子物理的可行性.基于信号事例的统计量的初步分析表明, HIAF集群将能够提供极具国际竞争力的高流强缪子和反质子束流,具备将缪子电子转换效率R_(μe)上限推至10^(–19)量级、缪子反常磁矩的精度提高到0.07 ppm的潜力.

The high intensity frontier in particle physics would reveal physics beyond standard model, and is one of the most sensitive probing tools for particle physics at very high energy scales. In this paper, the high intensity frontier in particle physics is reviewed from the perspective of muon and antiproton physics and the experiments like charged lepton flavor violation are summarized. The possible utilization of HIAF accelerators in muon electron conversion searching and ultrahigh precision measurement of muon anomalous magnetic moment is demonstrated. The preliminary analysis considering solely the signal statistics indicates that the muon and antiproton beams produced by the experimental platform of the HIAF accelerators would be quite competitive compared to the available beams around the world. By employing HIAF accelerators, the upper limit of muon electron conversion branching ratio could be pushed to the order of 10^(-19), and the measurement of muon anomalous magnetic moment would be potentially improved to the precision of0.07 ppm.