Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9860789 | Physics Letters B | 2005 | 8 Pages |
Abstract
The properties of ground-state baryons of light-quarks are investigated in UË(12)-classification scheme of hadrons, recently proposed by us. In UË(12), in addition to the ordinary 56 of SU(6)SF, the existence of the extra 56 with positive-parity and 70 with negative-parity appear as ground-states in lower mass region. The N(1440), Î(1600) and Σ(1660) have the plausible properties of masses and strong decay widths as the flavor-octet of extra 56, while the ordinary radially-excited octet states are expected not to be observed as resonances because of their large predicted widths of the decays to extra 70 baryons. The extra 70 baryons are not observed directly as resonances for the same reason, except for only the Î(1406), of which properties are consistently explained through the singlet-octet mixing. The baryon properties in lower mass regions are consistently explained in UË(12) scheme.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Muneyuki Ishida,