Physics on the high intensive electron position accelerator at 2-7 GeV

doi:10.1360/N972016-00398

	Physics on the high intensive electron position accelerator at 2-7 GeV
	Huang, Guangshun ; Li, Cheng; Li HB(李海波); Shen XY(沈肖雁); Yuan ZZ(苑长征); Li, Haibo ; Liu, Jianbei; Luo, Qing ; Ma, Jianping ; Peng, Haiping
刊名	Chinese Science Bulletin科学通报
	2017
卷号	62 期号:12 页码:1226-1232
ISSN号	0023-074X
DOI	10.1360/N972016-00398
其他题名	2～7 GeV高亮度正负电子对撞机的物理研究
文献子类	Article
英文摘要	With the experimental examination in the past few decades, the Standard Model (SM), which describes the building blocks of matter and the fundamental forces in the universe, is considered to be the most successful theoretical model to describe the subatomic world. In particular, after the discovery of Higgs particle in 2012 at Large Hadron Collider (LHC), the success of SM reaches to an unprecedented level. However, it does leave a lot of phenomena unexplained questions, such as, what are the dark matter and dark energy? what happened to the anti-matter matter asymmetric in the world? why are there three generations of quarks and lepton with such a different mass scale? and so on. At present, it is believed that there exists a more general theory hidden deeply in the subatomic world, which includes the new physics, and can solve the all unexplained questions, and the SM is its appromiximation in the current reached energy region experimentally. On the other hand, as one of two parts of SM, Quantum chromodynamics (QCD) theory, which is theory of strong interactions, a fundamental force describing the interactions between quarks and gluons, and have been tested precisely in the high energy range, but there is still some fundamental questions unsolved in row energy region. Therefore, it is urgent for us to have the experiments beyond current level to explore and reveal the mysteries of the subatomic world. At present, the studies of particle physics based on accelerator is one of most powerful approach to investigate the subatomic world, and can be classed into two frontiers, i.e. the high energy frontiers and the high intensitive fronitiers. A super tau-charm factory, which is expected to have luminosity of 0.5×1035-1.0 ×1035cm-2s-1and with center of mass energy at 2-7 GeV, is one of typical high intersitive frontiers experiment. It can produce all there generation leptons and first and secondary generation quarks and have several unique features, e.g., running on the energy at the transition between the perturbative and non-perturbative QCD, producing rich resonances, charmonium and charmed mesons, having threshold characteristics which provides clean environment for the signals, etc. The super tau-charm factory is regarded as an ideal platform to explore the hadronic physics and search for the new physics beyond the SM. In this letter, we present the key science questions and physics topics are desired on a super tau-charm factory, and discuss the feasibility and necessity to build a new generation high intensive Electron Position Accelerator Facility (HIEPA) at 2-7 GeV in China. The current international and internal situations for particle physics progress, the key technologies in both accelaerator and detector, and the driving force for science and technology to build the tau-charm factory in China are also illustrated. We conclude that HIEPA is an excellent option from all aspects for the future accelerator programs in China based on its current scale of particle physics community and the expertise reserve, and call for the start and support from the government of R&D for this project. © 2017, Science Press. All right reserved.
电子版国际标准刊号	2095-9419
语种	中文
CSCD记录号	CSCD:5963011
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284246]
专题	高能物理研究所_实验物理中心
作者单位	1.University of Chinese Academy of Sciences, Beijing; 100049, China 2.School of Physics, Peking University, Beijing; 100871, China; 3.Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing; 100190, China; 4.Institute of High Energy Physics, Chinese Academy of Sciences, Beijing; 100049, China; 5.School of Physics, University of Science and Technology, Hefei; 230026, China;
推荐引用方式 GB/T 7714	Huang, Guangshun,Li, Cheng,Li HB,et al. Physics on the high intensive electron position accelerator at 2-7 GeV[J]. Chinese Science Bulletin科学通报,2017,62(12):1226-1232.
APA	Huang, Guangshun.,Li, Cheng.,李海波.,沈肖雁.,苑长征.,...&Zhu, Shouhua.(2017).Physics on the high intensive electron position accelerator at 2-7 GeV.Chinese Science Bulletin科学通报,62(12),1226-1232.
MLA	Huang, Guangshun,et al."Physics on the high intensive electron position accelerator at 2-7 GeV".Chinese Science Bulletin科学通报 62.12(2017):1226-1232.