Search for the five-quark components in the ground-state baryons

Sea quark contents of the octet baryons are investigated by employing an extended chiral constituent quark approach, which embodies higher Fock five-quark components in the baryons wave-functions. We calculate both diagonal and non-diagonal matrix elements for all 17 five-quark configurations and remove contributions from the center-of-mass motion of the quark clusters. Results are compared to other theoretical findings, such as lattice-QCD, and to various data coming from JLab, Fermi Lab, MAMI... on the observables such as strangeness magnetic form factor of the proton, flavor asymmetry of the nucleon sea $\bar{d}-\bar{u}$, radiative and strong decays of the $\Lambda(1405)$ resonance, strong decay of low-lying $S_{11}$ and $D_{13}$ nucleon resonances... Probabilities of $\bar{u}$, $\bar{d}$ and $\bar{s}$ in the nucleon, $\Lambda$, $\Sigma$ and $\Xi$ baryons, due to the intrinsic five-quark components in the baryons wave functions are predicted, based on the probability amplitudes calculated within the most commonly accepted $q\bar{q}$ pair creation mechanism, namely, the $^{3}P_{0}$ model.