Abstract
A Bethe-Salpeter-Faddeev (BSF) calculation is performed for the pentaquark Theta(+) in the diquark picture of Jaffe and Wilczek in which Theta(+) is a diquark-diquark-(s) over bar three-body system. Nambu-Jona-Lasinio (NJL) model is used to calculate the lowest order diagrams in the two-body scatterings of (s) over barD and DD. With the use of coupling constants determined from the meson sector, we find that (s) over barD interaction is attractive while DD interaction is repulsive. However, we cannot find a bound 1/2(+) pentaquark state. Instead, a bound pentaquark Theta(+) in 1/2(-) channel is obtained with unphysically strong vector mesonic coupling constants.
| Original language | English |
|---|---|
| Pages (from-to) | 111-114 |
| Number of pages | 4 |
| Journal | Progress of Theoretical Physics Supplement |
| Issue number | 168 |
| Publication status | Published - 2007 |
| Event | Yukawa International Seminar on New Frontiers in QCD - Exotic Hadrons and Hadronic Matter - , Japan Duration: 20-Nov-2006 → 8-Dec-2006 |
Keywords
- MODEL
- NUCLEON