Study of $p\barΛ$ and $p\barΣ$ systems in constituent quark models

Details Study of $p\barΛ$ and $p\barΣ$ systems in constituent quark models Study of $p\barΛ$ and $p\barΣ$ systems in constituent quark models

2011-12-26

arxiv.org/abs/1112.5857v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures

Scientific paper

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.

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