Implications of the Zcs(3985) and Zcs(4000) as two different states
Science Bulletin, ISSN: 2095-9273, Vol: 66, Issue: 20, Page: 2065-2071
2021
- 31Citations
- 5Captures
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Metrics Details
- Citations31
- Citation Indexes31
- 31
- CrossRef14
- Captures5
- Readers5
Article Description
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 quantum chromodynamics (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.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2095927321004667; http://dx.doi.org/10.1016/j.scib.2021.06.026; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85111501970&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/36654264; https://linkinghub.elsevier.com/retrieve/pii/S2095927321004667; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=7108187&internal_id=7108187&from=elsevier; https://dx.doi.org/10.1016/j.scib.2021.06.026
Elsevier BV
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