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STUDY OF $p\bar{\Lambda}$ AND $p\bar{\Sigma}$ SYSTEMS IN CONSTITUENT QUARK MODELS
- Source :
- Modern Physics Letters A. 27:1250039
- Publication Year :
- 2012
- Publisher :
- World Scientific Pub Co Pte Lt, 2012.
-
Abstract
- The $p\bar{\Lambda}$ systems with J=0 and J=1 are dynamically investigated within the framework of two constituent quark models: the chiral quark model and the quark delocalization color screening model. The model parameters are taken from our previous work, which gave a good description of the proton-antiproton S-wave elastic scattering cross section experimental data. The $p\bar{\Lambda}$ elastic scattering processes with coupling to $p\bar{\Sigma}$ state are studied. The results show that, there is no s-wave bound state as indicated by an enhancement near the threshold of $p\bar{\Lambda}$ in $J/\psi$ decay. However, a $IJ = {1/2}0$ $p\bar{\Sigma}$ resonance state is given in the quark delocalization color screening model.<br />Comment: 7 pages, 3 figures
- Subjects :
- Quark
Elastic scattering
Physics
Nuclear and High Energy Physics
Particle physics
Nuclear Theory
Bar (music)
High Energy Physics::Phenomenology
Quark model
General Physics and Astronomy
Constituent quark
Astronomy and Astrophysics
Lambda
Coupling (probability)
High Energy Physics - Phenomenology
Bound state
High Energy Physics::Experiment
Subjects
Details
- ISSN :
- 17936632 and 02177323
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Modern Physics Letters A
- Accession number :
- edsair.doi.dedup.....846671478c5c74d6b76b71d63ce4a10c