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Spectra of Free Diquark in the Bethe-Salpeter Approach

Yan-Ming Yu·Hong-Wei Ke·Yi-Bing Ding·Xin-Heng Guo·Hong-Ying Jin·Xue-Qian Li·Peng-Nian Shen·Guo-Li Wang
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Abstract

In this work, we employ the Bethe-Salpeter (B-S) equation to investigate the spectra of free diquarks and their B-S wave functions. We find that the B-S approach can be consistently applied to study the diqaurks with two heavy quarks or one heavy and one light quarks, but for two light-quark systems, the results are not reliable. There are a few free parameters in the whole scenario which can only be fixed phenomenologically. Thus, to determine them, one has to study baryons which are composed of quarks and diquarks.

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Yan-Ming Yu, Hong-Wei Ke, Yi-Bing Ding, Xin-Heng Guo, Hong-Ying Jin, Xue-Qian Li, Peng-Nian Shen, Guo-Li Wang. 2006-02-09. Spectra of Free Diquark in the Bethe-Salpeter Approach. https://doi.org/10.1088/0253-6102%2F46%2F6%2F015

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