Z(c)(3900) as a resonance from the D(D)over-bar* interaction

doi:10.1103/PhysRevD.92.034004

	*Z(c)(3900) as a resonance from the D(D)over-bar interaction**
	He, Jun1,2,3,4
刊名	PHYSICAL REVIEW D
	2015-08-05
卷号	92 页码:9
ISSN号	1550-7998
DOI	10.1103/PhysRevD.92.034004
英文摘要	In this paper it is proposed that the charged charmonium-like state Z(c)(3900) is a resonance above threshold from the D (D) over bar* interaction. The D (D) over bar* interaction is described by the one-bosn-exchange model with light meson exchanges plus a short-range J/psi exchange. The scattering amplitude is calculated within a Bethe-Saltpeter equation approach and the poles near the D (D) over bar* threshold are searched. In isoscalar sector, two poles found under the D (D) over bar* threshold-i.e., bound states-have quantum numbers I-G(J(PC)) = 0(-)(1(+-)) and 0(+)(1(++)). The latter can be related to the X(3872). In the isovector sector, a bound state with I-G(J(P)) = 1(+)(1(+)) is found with a large cut off about 3 GeV. If a cut off about 2 GeV is adopted with which a pole carrying quantum number of the X(3872) is produced at energy about 3871 MeV, the pole for the bound state with 1(+)(1(+)) runs across the threshold to second Rienman sheet and becomes a resonance above the D (D) over bar* threshold, which can be identified with the Z(c)(3900). With such cut off, the D (D) over bar* invariant mass spectrum is also investigated and the experimental results by BESIII can be reproduced
资助项目	Major State Basic Research Development Program in China[2014CB845405] ; National Natural Science Foundation of China[11275235] ; National Natural Science Foundation of China[11035006] ; Chinese Academy of Sciences (the Knowledge Innovation Project)[KJCX2-EW-N01]
WOS关键词	NUCLEON NUCLEON-INTERACTION ; MOLECULAR-STATES ; CHIRAL DYNAMICS ; EXCHANGE MODEL ; HEAVY MESONS ; LAMBDA(1405)
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000359050300001
资助机构	Major State Basic Research Development Program in China ; National Natural Science Foundation of China ; Chinese Academy of Sciences (the Knowledge Innovation Project)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/40374]
专题	中国科学院近代物理研究所
通讯作者	He, Jun
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Div Theoret Phys, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China 3.Inst Modern Phys CAS, Lanzhou 730000, Peoples R China 4.Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	He, Jun. Z(c)(3900) as a resonance from the D(D)over-bar* interaction[J]. PHYSICAL REVIEW D,2015,92:9.
APA	He, Jun.(2015).Z(c)(3900) as a resonance from the D(D)over-bar* interaction.PHYSICAL REVIEW D,92,9.
MLA	He, Jun."Z(c)(3900) as a resonance from the D(D)over-bar* interaction".PHYSICAL REVIEW D 92(2015):9.