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D and D_s in mass loaded flux tube

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【作者】 单红云张爱林

【Author】 SHAN Hong-Yun1 ZHANG Ai-Lin1,2;1) 1 Department of Physics, Shanghai University, Shanghai 200444, China 2 Kavli Institute for Theoretical Physics of China, CAS, Beijing 100190, China

【机构】 Department of Physics, Shanghai UniversityKavli Institute for Theoretical Physics of China, CAS

【摘要】 Heavy-light hadrons are studied in a mass loaded flux tube model. The study indicates that the dynamics of mesons and baryons containing a c quark is described well by the mass loaded flux tube. The hypothesis of good diquark-antiquark degeneracy is found reasonable in heavy-light quark systems. The spectrum of charmed (D) and charmed strange (Ds) mesons is systematically computed. D and Ds in 1D multiplets are predicted to have lower masses in comparison with other theoretical predictions. The predicted masses of the 1(13D1) and the 3(13D3) Ds agree well with those of recently observed Ds1(2700)± and DsJ(2860), respectively.

【Abstract】 Heavy-light hadrons are studied in a mass loaded flux tube model. The study indicates that the dynamics of mesons and baryons containing a c quark is described well by the mass loaded flux tube. The hypothesis of good diquark-antiquark degeneracy is found reasonable in heavy-light quark systems. The spectrum of charmed (D) and charmed strange (Ds) mesons is systematically computed. D and Ds in 1D multiplets are predicted to have lower masses in comparison with other theoretical predictions. The predicted masses of the 1(13D1) and the 3(13D3) Ds agree well with those of recently observed Ds1(2700)± and DsJ(2860), respectively.

【基金】 Supported by National Natural Science Foundation of China (10775093)
  • 【文献出处】 中国物理C ,Chinese Physics C , 编辑部邮箱 ,2010年01期
  • 【分类号】O572.3
  • 【下载频次】19
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