Calculation of mass of Y (4140) by introducing mixed molecule state in quark model

doi:http://dx.doi.org/10.1016/j.nuclphysb.2016.05.009

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Calculation of mass of Y (4140) by introducing mixed molecule state in quark model
	Lu, XF; Chen, XZ; Shi, RB; Guo, XR; Chen, XZ (reprint author), Shandong Univ Sci & Technol, Dept Fdn Courses, Tai An 271019, Shandong, Peoples R China.
刊名	NUCLEAR PHYSICS B
	2016
卷号	909 页码:243-259
DOI	http://dx.doi.org/10.1016/j.nuclphysb.2016.05.009
英文摘要	Using the general form of the Bethe-Salpeter wave functions for the bound states consisting of two vector fields given in our previous work, we investigate the molecular state composed of D-s(+) D-s(-). However, for the SU(3) symmetry the component D-s(+) D-s(-) is coupled with the other components D(0)(D) over bar(0) and D(+) D(-). Then we interpret the internal structure of the observed Y(4140) state as a mixed state of pure molecule states D(0)(D) over bar(0), D(+) D(-) and D-s(+) D-s(-) with quantum numbers J(P) = 0(+). In this paper, the operator product expansion is used to introduce the nonperturbative contribution from the vacuum condensates into the interaction between two heavy mesons. The calculated mass of Y (4140) is consistent with the experimental value, and we conclude that it is a more reasonable scenario to explain the structure of Y (4140) as a mixture of pure molecule states. (C) 2016 The Authors. Published by Elsevier B.V.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21576]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Chen, XZ (reprint author), Shandong Univ Sci & Technol, Dept Fdn Courses, Tai An 271019, Shandong, Peoples R China.
推荐引用方式 GB/T 7714	Lu, XF,Chen, XZ,Shi, RB,et al. Calculation of mass of Y (4140) by introducing mixed molecule state in quark model[J]. NUCLEAR PHYSICS B,2016,909:243-259.
APA	Lu, XF,Chen, XZ,Shi, RB,Guo, XR,&Chen, XZ .(2016).Calculation of mass of Y (4140) by introducing mixed molecule state in quark model.NUCLEAR PHYSICS B,909,243-259.
MLA	Lu, XF,et al."Calculation of mass of Y (4140) by introducing mixed molecule state in quark model".NUCLEAR PHYSICS B 909(2016):243-259.