Low-lying ud(s)over-bar(s)over-bar configurations in a non-relativistic constituent quark

	Low-lying ud(s)over-bar(s)over-bar configurations in a non-relativistic constituent quark
	Wang, WL; Huang, F; Zhang ZY(张宗烨); Yu YW(余友文); Zhang, ZY; Yu, YW; Liu, F
刊名	JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
	2007
卷号	34 期号:7 页码:1771-1782
通讯作者	Huazhong Normal Univ, Inst Particle Phys, Wuhan 430070, Peoples R China ; CCAST World Lab, Beijing 100080, Peoples R China ; Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要	The energies of the low- lying isoscalar and isovector udss configurations with spin-parity J(P) = 0(+), 1(+) and 2(+) are calculated in a non-relativistic constituent quark model by using the variational method. The contributions of various parts of the quark-quark interacting potentials including the s-channel interaction are investigated, and the effect of different forms of the confinement potential is examined. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describe the nucleon-nucleon scattering phase shifts and the hyperon-nucleon cross sections. The parameters of the s- channel interaction are fixed by the masses of K and K* mesons, for which the size parameter is taken to be two possible values. When it is chosen to be the same as baryons', the numerical results show that the masses of all the udss configurations are higher than the corresponding meson-meson thresholds. But when the size parameter for the K and K* mesons is adjusted to be smaller than that for the baryons, the udss configuration with I = 0 and J(P) = 1(+) is found to lie lower than the K* K* threshold, furthermore, this state has a very small KK* component and the interaction matrix elements between this state and KK* is comparatively small, thus its coupling to the KK* channel will consequently be weak and it might be regarded as a possible tetraquark candidate.
学科主题	Physics
类目[WOS]	Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]	Physics
原文出处	SCI
语种	英语
WOS记录号	WOS:000247190000016
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/239513]
专题	高能物理研究所_院士
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, WL,Huang, F,Zhang ZY,et al. Low-lying ud(s)over-bar(s)over-bar configurations in a non-relativistic constituent quark[J]. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,2007,34(7):1771-1782.
APA	Wang, WL.,Huang, F.,张宗烨.,余友文.,Zhang, ZY.,...&Liu, F.(2007).Low-lying ud(s)over-bar(s)over-bar configurations in a non-relativistic constituent quark.JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS,34(7),1771-1782.
MLA	Wang, WL,et al."Low-lying ud(s)over-bar(s)over-bar configurations in a non-relativistic constituent quark".JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS 34.7(2007):1771-1782.