Light- and heavy-quark symmetries and the Y(4230), Y(4360), Y(4500), Y(4620), and X(4630) resonances

doi:10.1103/PhysRevD.107.016001

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

	Light- and heavy-quark symmetries and the Y(4230), Y(4360), Y(4500), Y(4620), and X(4630) resonances
	Peng, Fang-Zheng ; Yan, Mao-Jun ; Sanchez, Mario Sanchez 2; Valderrama, Manuel Pavon
刊名	PHYSICAL REVIEW D
	2023
卷号	107 期号:1 页码:16001
关键词	AXIAL-VECTOR CURRENT X(3872) DECAYS
ISSN号	2470-0010
DOI	10.1103/PhysRevD.107.016001
英文摘要	The heavy hadron spectrum is constrained by symmetries, of which two of the most important ones are heavy-quark spin and SU(3)-flavor symmetries. Here we argue that in the molecular picture the Y(4230) [or Y(4260)], the Y(4360), and the recently discovered Y(4500) and Y(4620) vectorlike resonances are linked by these two symmetries. By formulating a contact-range effective field theory for the D over line D1 and Ds over line Ds1 family of S- and P-wave charmed meson-antimeson systems, we find that if the Y(4230) were to be a pure D over line D1 molecular state, there would be a D* over line D1 partner with a mass similar to the Y(4360), a Ds over line Ds1 partner with a mass close to the Y(4500), and three J = 1, 2 Ds over line Ds1 and J = 3 Ds over line Ds2 bound states with a mass in the vicinity of 4630 MeV, of which the first one (J = 1) might correspond with the Y(4620). The previous predictions can in turn be improved by modifying the assumptions we have used to build the effective field theory. In particular, if we consider the closeness of the D thresholds and include the related coupled channel dynamics, we predict a J = 2 positive C-parity state with a mass around 4650 MeV. This hidden-strange and hidden-charm state might in turn be identified with the X(4630) that has been discovered during the past year by the LHCb in the J=psi phi invariant mass distribution.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/28012]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Bordeaux, Ctr Etud Nucl, CNRS, IN2P3, F-33175 Gradignan, France
推荐引用方式 GB/T 7714	Peng, Fang-Zheng,Yan, Mao-Jun,Sanchez, Mario Sanchez,et al. Light- and heavy-quark symmetries and the Y(4230), Y(4360), Y(4500), Y(4620), and X(4630) resonances[J]. PHYSICAL REVIEW D,2023,107(1):16001.
APA	Peng, Fang-Zheng,Yan, Mao-Jun,Sanchez, Mario Sanchez,&Valderrama, Manuel Pavon.(2023).Light- and heavy-quark symmetries and the Y(4230), Y(4360), Y(4500), Y(4620), and X(4630) resonances.PHYSICAL REVIEW D,107(1),16001.
MLA	Peng, Fang-Zheng,et al."Light- and heavy-quark symmetries and the Y(4230), Y(4360), Y(4500), Y(4620), and X(4630) resonances".PHYSICAL REVIEW D 107.1(2023):16001.