Nucleon electric polarizability in a non-relativistic chiral constituent quark model

	Nucleon electric polarizability in a non-relativistic chiral constituent quark model
	Dong YB(董宇兵); Chen DY(陈殿勇); Dong, YB; Chen, DY
刊名	NUCLEAR PHYSICS A
	2006
卷号	766 页码:#REF!
关键词	chiral quark model nucleon electric polarizability goldstone boson configuration mixing electric mean square radius
通讯作者	Dong, YB (reprint author), CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
英文摘要	The non-relativistic chiral constituent quark model is applied to study nucleon electric polarizability and its electric mean square radius. The effect of Goldstone Boson degrees of freedom is discussed explicitly. It is found that chiral fields remarkably contribute not only to the proton and neutron electric mean square radii, but also to their electric polarizabilities. Consequently, the fluctuation of the chiral fields inside the nucleon cannot be simply ignored in the explanation of nucleon intrinsic polarizabilities, as well as in other predictions of the nucleon spin and flavor properties. Moreover, if we keep the harmonic oscillator frequency w to be around 500 MeV, we find that the simple model with the Goldstone boson degrees of freedom is not sufficient to give a good description both for the electric mean square radii and for the electric polarizabilities of the proton and neutron simultaneously, even if the configuration mixing is included. Our results show that a small value of w similar to 300 MeV is favored. (c) 2005 Elsevier B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Nuclear
收录类别	SCI
WOS记录号	WOS:000235126600010
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/226764]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Dong YB,Chen DY,Dong, YB,et al. Nucleon electric polarizability in a non-relativistic chiral constituent quark model[J]. NUCLEAR PHYSICS A,2006,766:#REF!.
APA	董宇兵,陈殿勇,Dong, YB,&Chen, DY.(2006).Nucleon electric polarizability in a non-relativistic chiral constituent quark model.NUCLEAR PHYSICS A,766,#REF!.
MLA	董宇兵,et al."Nucleon electric polarizability in a non-relativistic chiral constituent quark model".NUCLEAR PHYSICS A 766(2006):#REF!.