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(Seminar) The inner structure study of the Zc states
2019-09-12  【 】【打印】【关闭

CAS Key Laboratory of Theoretical Physics

Institute of Theoretical Physics

Chinese Academy of Sciences

Seminar

Title

题目

The inner structure study of the Zc states  

Speaker

报告人

肖立叶 博士

Affiliation

所在单位

北京科技大学

Date

日期

2019年9月12日(周四)早上10:00

Venue

地点

ITP South Building 6420

Abstract

摘要

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. 

Contact Person

所内联系人

郭奉坤
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