A Phenomenological Analysis of Higher Fock State Contributions to the ${\chi }_{cJ}$ Decays

Abstract

We present a phenomenological analysis of higher Fack state contributions to the ${\chi }_{cJ}$ decays by using the recent BES experimental data. It is found that the higher Fock state $\mid (c\bar{c}{)}_{8}g>$ makes an important contributions to the inclusive and exclusive processes with respect to that from the valence Fock state $\mid c\bar{c}>$ of the ${\chi }_{cJ}$ and some constraints of these contributions are obtained for the ${\chi }_{c0}$ and ${\chi }_{c2}$ states in order to fit the experimental data.