Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-09
Phys.Rev. D69 (2004) 094009
Physics
High Energy Physics
High Energy Physics - Phenomenology
5 pages, 1 figure, phases are chosen to be consistent with the de Swart convention, to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.69.094009
We study the group structure of baryon anti-decuplet containing the $\Theta^+$. We derive the SU(3) mass relations among the pentaquark baryons in the anti-decuplet, when there is either no mixing or ideal mixing with the pentaquark octet, as advocated by Jaffe and Wilczek. This constitutes the Gell-Mann--Okubo mass formula for the pentaquark baryons. We also derive SU(3) symmetric Lagrangian for the interactions of the baryons in the anti-decuplet with the meson octet and the baryon octet. Our analysis for the decay widths of the anti-decuplet states suggests that the N(1710) is ruled out as a pure anti-decuplet state, but it may have anti-decuplet component in its wavefunction if the multiplet is mixed with the pentaquark octet.
Kim Hungchong
Lee Su Houng
Oh Yongseok
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