Abstract
Evidence has been accumulating for the existence of significant intrinsic non-perturbative five-quark components in various baryons. The inclusion of the five-quark components gives a natural explanation of the excess of d ¯ over u ¯ , significant quark orbital angular momentum in the proton, the problematic mass and decay pattern of the lowest 1 / 2 − baryon nonet, etc.. A breathing mode of q q q ↔ q q q q q ¯ is suggested for the lowest 1 / 2 − baryon octet. Evidence of a predicted member of the new scheme, Σ ∗ ( 1 / 2 − ) around 1380 MeV, is introduced.
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