ar X iv : h ep - p h / 06 11 23 8 v 2 2 6 N ov 2 00 6 K ∗ - couplings for the antidecuplet excitation Ya

ar X iv : h ep - p h / 06 11 23 8 v 1 1 7 N ov 2 00 6 K ∗ - couplings for the antidecuplet excitation

We estimate the coupling of K∗ vector meson to the N → Θ transition employing the unitary simmetry, vector meson dominance, and results of the GRAAL Collaboration on the η photoproduction off the neutron. Our small numerical value confirms that the CLAS Collaboration null results do not contradict to theoretical expectations for the Θ-production. We also estimate the K∗-coupling for the N → Σ∗ ...

ar X iv : h ep - p h / 06 11 23 8 v 3 2 6 Fe b 20 07 K ∗ - couplings for the antidecuplet excitation

We estimate the coupling of the K∗ vector meson to the N → Θ transition employing unitary symmetry, vector meson dominance, and results from the GRAAL Collaboration for η photoproduction off the neutron. Our small numerical value for the coupling constant is consistent with the nonobservation of the Θ in recent CLAS searches for its photoproduction. We also estimate the K∗coupling for the N → Σ...

ar X iv : h ep - p h / 06 11 27 1 v 2 2 2 N ov 2 00 6 Structure of the axial - vector meson D s 1 ( 2460 )

ar X iv : h ep - p h / 06 11 27 1 v 1 2 1 N ov 2 00 6 Structure of the axial - vector meson D s 1 ( 2460 )

ar X iv : h ep - p h / 06 11 09 6 v 1 8 N ov 2 00 6 Baryon resonances in large N c QCD

The baryon spectra are discussed in the context of the 1/N c expansion approach, with emphasis on mixed symmetric states. The contributions of the spin dependent terms as a function of the excitation energy are shown explicitly. At large energies these contributions are expected to vanish.