Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-11-19
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, Proceedings of Hadron-nuclear physics probed by photon (HNP06), Feb. 16-18, 2006, JAEA, Kizu, Kyoto
Scientific paper
We discuss a new description for the Roper resonance, the first nucleon excited state of JP = 1/2+, in a model of strong diquark correlations. Treating the scalar-isoscalar and axial-vector--isovector diquarks as independent degrees of freedom, two states having nucleon quantum numbers are constructed. Due to the scalar and axial-vector nature of the diquarks, the two nucleon states have different internal structure of spin and isospin. This yields the mass splitting of order several hundreds MeV, and hence the two states are identified with the nucleon and Roper. We demonstrate this scenario in a simple two channel problem.
Hosaka Atsushi
Kagata Keitaro
No associations
LandOfFree
Roper resonance in a quark-diquark model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Roper resonance in a quark-diquark model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roper resonance in a quark-diquark model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-420107