Diquark bound states with a completely crossed ladder truncation
arXiv:1502.05415 · doi:10.1103/PhysRevD.91.076011
Abstract
The Bethe-Salpeter equation in the diquark channel is investigated by employing the Dyson-Schwinger method together with the Munczek-Nemirovsky model. The novelty of our study is a resummation of completely crossed ladder diagrams in the Bethe-Salpeter kernel. These diagrams are enhanced due to their color factors in the diquark channel, but not in the meson channel. In our analysis, diquark bound-state solutions exist in the Bethe-Salpeter equation.
20 pages, 8 figures, 4 tables, v2: version published in PRD, v3: minor correction in Table 1