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(Seminar) The inner structure study of the Zc states |
2019-09-12
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CAS Key Laboratory of Theoretical Physics
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Institute of Theoretical Physics
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Chinese Academy of Sciences
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Seminar
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Title
题目
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The inner structure study of the Zc states |
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Speaker
报告人
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Affiliation
所在单位
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北京科技大学 |
Date
日期
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2019年9月12日(周四)早上10:00 |
Venue
地点
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ITP South Building 6420
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Abstract
摘要
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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmonium-like Zc states cannot be accommodated within the naive quark model. These charged Zc states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the BESIII Collaboration reported the evidence for the decay Zc(3900)±→ηcρ± at S1/2=4.226 GeV, and obtained the ratio RZc(3900)=Zc(3900)±→ηcρ±/Zc(3900)±→J/ψπ±=2.2±0.9. Since the decay properties of the states are sensitive to their inner structures, in this report, we investigate the decays of Zc states into ηcρ and J/ψπ in molecular and tetraquark scenarios. By compared the experimental data, we hope the theoretical results are helpful for us to pin down the inner structures of Zc states.
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Contact Person
所内联系人
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郭奉坤 |
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