| Full text | |
| Author(s): |
Lu, Ya
;
Chen, Chen
;
Roberts, Craig D.
;
Segovia, Jorge
;
Xu, Shu-Sheng
;
Zong, Hong-Shi
Total Authors: 6
|
| Document type: | Journal article |
| Source: | PHYSICAL REVIEW C; v. 96, n. 1, p. 11-pg., 2017-07-28. |
| Abstract | |
We describe a calculation of the spectrum of flavor-SU(3) octet and decuplet baryons, their parity partners, and the radial excitations of these systems, made using a symmetry-preserving treatment of a vector x vector contact interaction as the foundation for the relevant few-body equations. Dynamical chiral symmetry breaking generates nonpointlike diquarks within these baryons and hence, using the contact interaction, flavor-antitriplet scalar, pseudoscalar, vector, and flavor-sextet axial-vector quark-quark correlations can all play active roles. The model yields reasonable masses for all systems studied and Faddeev amplitudes for ground states and associated parity partners that sketch a realistic picture of their internal structure: ground-state, even-parity baryons are constituted, almost exclusively, from like-parity diquark correlations, but orbital angular momentum plays an important role in the rest-frame wave functions of odd-parity baryons, whose Faddeev amplitudes are dominated by odd-parity diquarks. (AU) | |
| FAPESP's process: | 15/21550-4 - Continuum Strong QCD: Baryon Masses and Partonic Structure |
| Grantee: | Chen Chen |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |