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

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	*Z(c)(3900) as a resonance from the D(D)over-bar interaction**
	He, J
刊名	PHYSICAL REVIEW D
	2015
卷号	92 期号:3 页码:34004
通讯作者	He, J (reprint author), Chinese Acad Sci, Inst Modern Phys, Div Theoret Phys, Lanzhou 730000, Peoples R China.
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
学科主题	Astronomy & Astrophysics ; Physics
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
关键词[WOS]	NUCLEON NUCLEON-INTERACTION ; MOLECULAR-STATES ; CHIRAL DYNAMICS ; EXCHANGE MODEL ; HEAVY MESONS ; LAMBDA(1405)
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/20902]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	He, J. Z(c)(3900) as a resonance from the D(D)over-bar* interaction[J]. PHYSICAL REVIEW D,2015,92(3):34004.
APA	He, J.(2015).Z(c)(3900) as a resonance from the D(D)over-bar* interaction.PHYSICAL REVIEW D,92(3),34004.
MLA	He, J."Z(c)(3900) as a resonance from the D(D)over-bar* interaction".PHYSICAL REVIEW D 92.3(2015):34004.