arXiv:hep-ph/0602077·v1·High Energy Physics — Phenomenology
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🇨🇳
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.
Comments: 16 pages, no figures