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arXiv · 1001.1084

Five-quark components in baryons

B. S. Zou
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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 $\bar d$ over $\bar u$, 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 $qqq\leftrightarrow qqqq\bar q$ 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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B. S. Zou. 2010-01-07. Five-quark components in baryons. https://doi.org/10.1016/j.nuclphysa.2010.01.194

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