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An extended chiral constituent quark approach, which embodies higher Fock five-quark components in the baryons wave-functions, is employed to study the sea quark content of the octet baryons. We report on the probabilities of $\bar{u}$, $\bar{d}$ and $\bar{s}$ in the nucleon, $\Lambda$, $\Sigma$ and $\Xi$ baryons, arising from the intrinsic five-quark states in the baryons wave functions. Based on those probabilities, results for meson-nucleon $\sigma$-terms; namely $\sigma_{\pi N}, \sigma_{K N}$ and $\sigma_{\eta N}$, are presented.

Intrinsic five-quark Fock states of baryons and meson-nucleon \sigma -terms