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

作　　者：孙志宇[1,2] 陈良文 蔡汉杰 李亮 尤郑昀 袁野 王莹 谢聚军[1,2] 冯兆庆 王世陶[1,2] SUN ZhiYu;CHEN LiangWen;CAI HanJie;LI Liang;YOU ZhengYun;YUAN Ye;WANG Ying;XIE JuJun;FENG ZhaoQing;WANG ShiTao(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Physics and Astronomy,Shanghai Jiaotong University,Shanghai 200240,China;Shanghai Key Laboratory1 of Particle Physics and Cosmology,Shanghai 200240,China;School of Physics,Sun Yat-sen University,Guangzhou 510275,China;Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China;School of Physics and Optoelectronic Technology,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049 [3]上海交通大学物理与天文学院,上海200240 [4]上海市粒子物理和宇宙学重点实验室,上海200240 [5]中山大学物理学院,广州510275 [6]中国科学院高能物理研究所,北京100049 [7]华南理工大学物理与光电学院,广州510641

出　　处：《中国科学：物理学、力学、天文学》2020年第11期129-150,共22页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：中国科学院前沿科学重点研究(编号:QYZDY-SSW-SLH006);国家自然科学基金(编号:11722546,11675226,11675275);国家重点基础研究发展计划(编号:2015CB856903)资助项目。

摘　　要：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.

关 键 词：高强度前沿 缪子反常磁矩 带电轻子味破缺 反质子 湮灭反应 

分 类 号：O572.2[理学—粒子物理与原子核物理]