摘要
Mass spectra and wave functions of the doubly heavy baryons are computed assuming that the two heavy quarks inside a baryon form a compact heavy'diquark core'in a color anti-triplet,and bind with the remaining light quark into a colorless baryon.The two reduced two-body problems are described by the relativistic Bethe-Salpeter equations(BSEs)with the relevant QCD inspired kernels.We focus on the doubly heavy baryons with 1^+heavy diquark cores.After solving BSEs in the instantaneous approximation,we present the mass spectra and the relativistic wave functions of the diquark cores,and of the low-lying baryon states J^P=(1/2)^+and(3/2)^+with flavors(ccq)(bcq)and(bbq).A comparison with other approaches is also made.
Mass spectra and wave functions of the doubly heavy baryons are computed assuming that the two heavy quarks inside a baryon form a compact heavy ’diquark core’ in a color anti-triplet,and bind with the remaining light quark into a colorless baryon.The two reduced two-body problems are described by the relativistic Bethe-Salpeter equations(BSEs) with the relevant QCD inspired kernels.We focus on the doubly heavy baryons with 1^+ heavy diquark cores.After solving BSEs in the instantaneous approximation,we present the mass spectra and the relativistic wave functions of the diquark cores,and of the low-lying baryon states J^P=(1/2)^+ and(3/2)^+ with flavors(ccq)(bcq)and(bbq).A comparison with other approaches is also made.
作者
Qiang Li
Chao-Hsi Chang
Si-Xue Qin
Guo-Li Wang
李强;张肇西;秦思学;王国利(School of Physical Science and Technology,Northwestern Polytechnical University,Xi'an 710072,China;Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,19A Yuquan Road,Beijing 100049,China;CCAST(World Laboratory),P.O.Box 8730,Beijing 100190,China;Department of Physics,Chongqing University,Chongqing 401331,China;Department of Physics,Hebei University,Baoding 071002,China)
基金
Supported in part by the National Natural Science Foundation of China(NSFC)(11745006,11535002,11575048,11675239,11805024,11821505)
supported by the Key Research Program of Frontier Sciences,CAS,(QYZDY-SSW-SYS006)
the China Postdoctoral Science Foundation(2018M641487)
the Fundamental Research Funds for the Central Universities(G2019KY05110)
