Triply heavy baryons in the constituent quark model

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2020,（2）
• 页码范围: 33-41
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1137/44/2/023102

摘要

The constituent quark model is used to compute the ground and excited state masses of QQQ baryons containing either c or b quarks.The quark model parameters previously used to describe the properties of charmonium and bottomonium states were used in this analysis.The non-relativistic three-body bound state problem is solved by means of the Gaussian expansion method which provides sufficient accuracy and simplifies the subsequent evaluation of the matrix elements.Several low-lying states with quantum numbers JP=1/2±2/3±,5/2±and 7/2 + are reported.Wecompare the results with those obtained by the other theoretical formalisms.There is a general agreement for the mass of the ground state in each sector of triply heavy baryons.However,the situation is more puzzling for the excited states,and appropriate comments about the most relevant features of our comparison are given.