A feasible scheme to search for fractional charge particles in low energy accelerator experiments

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	A feasible scheme to search for fractional charge particles in low energy accelerator experiments
	Wang, JH; Bian JG(卞建国); Bian, JG
刊名	JOURNAL OF INSTRUMENTATION
	2012
卷号	7 页码:P07020
关键词	Particle identification methods Plasma diagnostics - charged-particle spectroscopy
英文摘要	In the Standard Model of particle physics, quarks and anti-quarks have fractional charges equal to +/- 1/3 or +/- 2/3 of the electron's charge. There has been a large number of experiments searching for fractional charge particles using a variety of methods, including dE/dx ionization energy loss measurements in e(+)e collisions, but no evidence has been found to confirm existence of free fractional charge particles, which leads to the quark confinement theory. In this paper, a proposal to search for fractional charge particles is presented, which is based on the conservation law of four-momentum and the Lorentz force law. To show the power of the new strategy, a fully BESIII detector simulated signal sample mixed with a fully simulated background sample is analyzed and lower signal cross section limits to discover 5 sigma signal as a function of quark mass are estimated for the background. The analysis result shows that in comparison with ionization energy loss measurements, the advantage of the strategy is that it can identify fractional charge particles without using any theoretical or empirical formulae to calculate any expected observation values.
学科主题	Instruments & Instrumentation
收录类别	SCI
WOS记录号	WOS:000307076500003
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224745]
专题	高能物理研究所_粒子天体物理中心
推荐引用方式 GB/T 7714	Wang, JH,Bian JG,Bian, JG. A feasible scheme to search for fractional charge particles in low energy accelerator experiments[J]. JOURNAL OF INSTRUMENTATION,2012,7:P07020.
APA	Wang, JH,卞建国,&Bian, JG.(2012).A feasible scheme to search for fractional charge particles in low energy accelerator experiments.JOURNAL OF INSTRUMENTATION,7,P07020.
MLA	Wang, JH,et al."A feasible scheme to search for fractional charge particles in low energy accelerator experiments".JOURNAL OF INSTRUMENTATION 7(2012):P07020.