The spectra of baryons which include two heavy quarks and one light quark can be treated as a two-body system,where two heavy quarks constitute a bosonic diquark.

• 由两个重夸克和一个轻夸克组成的重子可以看作是一个两体系统.；它的两个重夸克组成一个玻色型的双夸克团