X(1835) as Proton-Antiproton Bound State in Skyrme Model

Physics – High Energy Physics – High Energy Physics - Phenomenology

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9 pages, 5 figures, Talk presented in the 3rd meeting on BES physics, Nanning, China, Nov. 2005

Scientific paper

We present a review to the recent works related to interpreting the exotic particle X(1835) reported by BES as a $N\bar{N}$-baryonium in the Skyrme model. There are two evidences that support this interpretation: 1) There exist a classical $N\bar{N}$-Skyrmion solution with about $\sim 10$MeV binding energies in the model; 2) The decay of this Skymion-baryonium is caused by annihilation of $p-\bar{p}$ inside X(1835) through the quantum tunneling effect, and hence the most favorable decay channels are $X\to \eta 4\pi$ or $X\to \eta' 2\pi$. These lead to reasonable interpreting the data of BES, and especially to useful prediction on the decay mode of X(1835) for the experiment.

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