Symmetry, Vol. 8, Pages 14: Status of X(1835) and p\(\overline{p}\) Interaction from Chiral Symmetry

After the observation of the strong near-threshold enhancement of proton-antiproton mass spectrum in J / ψ → γp\(\overline{p}\) decay, lots of theoretical investigations have been available such as new resonance, the final-state p\(\overline{p}\) interaction (FSI), p\(\overline{p}\) bound state (or baryonium), glueball, or other exotic (tetra-quark) states. Here, we provide a short review on the current status, especially on the pertinent discussions concerning its relation to p\(\overline{p}\) interaction, for which the emphasis is put on the recently constructed chiral potential.

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