Five-quark components in baryons
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 pr...
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| Published in | Nuclear physics. A Vol. 835; no. 1; pp. 199 - 206 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
Elsevier B.V
01.04.2010
|
| Subjects | |
| Online Access | Get full text |
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| Summary: | 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. |
|---|---|
| ISSN: | 0375-9474 |
| DOI: | 10.1016/j.nuclphysa.2010.01.194 |