Possible assignments of the X(3872), Z(c)(3900), and Z(b)(10610) as axial-vector molecular states

	Possible assignments of the X(3872), Z(c)(3900), and Z(b)(10610) as axial-vector molecular states
	Wang, ZG; 黄涛(理); Huang, T
刊名	EUROPEAN PHYSICAL JOURNAL C
	2014
卷号	74 期号:5 页码:2891
英文摘要	In this article, we construct both the color singlet-singlet type and the octet-octet type currents to interpolate X(3872), Z(c)(3900), and Z(b)(10610), and we calculate the vacuum condensates up to dimension-10 in the operator product expansion. Then we study the axial-vector hidden charm and hidden bottom molecular states with the QCD sum rules, explore the energy-scale dependence of the QCD sum rules for the heavy molecular states in details, and we use the formula root M-X/Y/Z(2) - (2M(Q))(2) with the effective masses M-Q to determine the energy scales. The numerical results support assigning X(3872), Z(c)(3900), and Z(b)(10610) as the color singlet-singlet type molecular states with J(PC) = 1(++), 1(+-), 1(+-), respectively, more theoretical and experimental work is still needed to distinguish the molecule and tetraquark assignments; while there are no candidates for the color octet-octet type molecular states.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000340091800001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/225012]
专题	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Wang, ZG,Huang T,Huang, T. Possible assignments of the X(3872), Z(c)(3900), and Z(b)(10610) as axial-vector molecular states[J]. EUROPEAN PHYSICAL JOURNAL C,2014,74(5):2891.
APA	Wang, ZG,黄涛,&Huang, T.(2014).Possible assignments of the X(3872), Z(c)(3900), and Z(b)(10610) as axial-vector molecular states.EUROPEAN PHYSICAL JOURNAL C,74(5),2891.
MLA	Wang, ZG,et al."Possible assignments of the X(3872), Z(c)(3900), and Z(b)(10610) as axial-vector molecular states".EUROPEAN PHYSICAL JOURNAL C 74.5(2014):2891.