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	X (4260) revisited: A coupled channel perspective
	Lu, Y; Anwar, MN; Zou, BS
刊名	PHYSICAL REVIEW D
	2017
卷号	96期号:11页码:114022
关键词	HEAVY TETRAQUARKS HIDDEN-CHARM QUARK-MODEL Y(4260)
ISSN号	2470-0010
DOI	10.1103/PhysRevD.96.114022
英文摘要	We calculate the probabilities of various charmed meson molecules for X (4260) under the framework of the P-3(0) model. The results indicate that, even though heavy quark spin symmetry forbids S wave coupling of D-1(D) over bar to the S-3(1) charmonia [psi(nS)], the D wave coupling is allowed and not negligible. Under this symmetry, the D-1(D) over bar can couple to D-3(1) charmonia [psi(nD)] via both S and D waves, and the overall coupling is around three times larger than that of psi(nS). The X (4260) cannot be a pure molecule but a mixture of a charmonium and various charmed meson components. Since the D-1(D) over bar couples strongly to psi(nD), our results suggest that, in the D-1(D) over bar molecular picture, the charmonium core of X (4260) is psi(nD) instead of psi(nS). As a result, the experimental fact that the R ratio has a dip around 4.26 GeV can be understood in the D-1(D) over bar molecular picture of the X (4260).
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/311006/23400]
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.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Lu, Y,Anwar, MN,Zou, BS. X (4260) revisited: A coupled channel perspective[J]. PHYSICAL REVIEW D,2017,96(11):114022.
APA	Lu, Y,Anwar, MN,&Zou, BS.(2017).X (4260) revisited: A coupled channel perspective.PHYSICAL REVIEW D,96(11),114022.
MLA	Lu, Y,et al."X (4260) revisited: A coupled channel perspective".PHYSICAL REVIEW D 96.11(2017):114022.

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