DOI: 10.1016/j.scib.2021.06.026
论文题名: Implications of the Zcs(3985) and Zcs(4000) as two different states
作者: Meng L. ; Wang B. ; Wang G.-J. ; Zhu S.-L.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
语种: 英语
中文关键词: Heavy quark spin symmetry
; Strangness
; Tetraquark
; Zcs states
英文关键词: Bosons
; Charm+
; Cs$++$
; Effective field theory
; Heavy quark spin symmetry
; Heavy-quark
; Nonrelativistic
; Spin symmetry
; Strangness
; Tetraquarks
; Zcs state
; Spin dynamics
英文摘要: Recently, the hidden charm tetraquark states Zcs(3985) and Zcs(4000) with strangeness were observed by the BESIII and LHCb collaborations, respectively, which are great breakthroughs for exploring exotic QCD structures. The first and foremost question is whether they are the same state. In this work, we explore the implications of the narrower state Zcs(3985) in BESIII and the wider one Zcs(4000) in LHCb as two different states. Within a solvable nonrelativistic effective field theory, we include the possible violations of heavy quark spin symmetry and SU(3) flavor symmetry in a comprehensive approach. If Zcs(3985) and Zcs(4000) are two different states, our results show that Zcs(4000)/Zcs(3985) is the pure (|D‾s∗D〉+/-|D‾sD∗〉)/2 state, and the SU(3) flavor partner of Zc(3900) is Zcs(4000) rather than the Zcs(3985). Another two important consequences are the existence of a tensor D‾s∗D∗ resonance with mass about 4126 MeV and width 13 MeV, and the suppression of the decay mode Zcs(3985)→J/ψK. The two consequences can be tested in experiments and distinguish the two-state interpretation from the one-state scheme. © 2021 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170359
Appears in Collections: 气候变化与战略
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作者单位: Institut für Theoretische Physik II, Ruhr-Universität Bochum, Bochum, D-44780, Germany; School of Physical Science and Technology, Hebei University, Baoding, 071002, China; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan; School of Physics and Center of High Energy Physics, Peking University, Beijing, 100871, China
Recommended Citation:
Meng L.,Wang B.,Wang G.-J.,et al. Implications of the Zcs(3985) and Zcs(4000) as two different states[J]. Science Bulletin,2021-01-01