Back to Search
Start Over
On SU(3)F positive-parity octet and decuplet baryons
- Source :
- EPJ Web of Conferences, Vol 241, p 02002 (2020)
- Publication Year :
- 2020
- Publisher :
- EDP Sciences, 2020.
-
Abstract
- A continuum approach to the three valence-quark bound-state problem in quantum field theory, employing parametrisations of the necessary kernel elements, is used to compute the spectrum and Poincarö- covariant wave functions for all flavour-SU(3) octet and decuplet baryons and their first positive-parity ex citations. Such analyses predict the existence of nonpointlike, dynamical quark-quark (diquark) correlations within all baryons; and a uniformly sound description of the systems studied is obtained by retaining flavour- antitriplet-scalar and flavour-sextet-pseudovector diquarks. The analysis predicts the existence of positive- parity excitations of the 𝚵, 𝚵*, Ω baryons, with masses, respectively (in GeV): 1.84(08), 1.89(04), 2.05(02). These states have not yet been empirically identified. This body of analysis suggests that the expression of emergent mass generation is the same in all u, d, s baryons and, notably, that dynamical quark-quark correla tions play an essential role in the structure of each one. It also provides the basis for developing an array of predictions that can be tested in new generation experiments.
- Subjects :
- Physics
Particle physics
Octet
010308 nuclear & particles physics
High Energy Physics::Lattice
QC1-999
Mass generation
Nuclear Theory
High Energy Physics::Phenomenology
Parity (physics)
01 natural sciences
Baryon
Diquark
0103 physical sciences
Covariant transformation
High Energy Physics::Experiment
Quantum field theory
010306 general physics
Wave function
Subjects
Details
- Language :
- English
- Volume :
- 241
- Database :
- OpenAIRE
- Journal :
- EPJ Web of Conferences
- Accession number :
- edsair.doi.dedup.....be841e0ee4eefcf1348a86adb628316a