Determining pentaquark quantum numbers from strong decays
Assuming that the recently observed Θ+ and Ξ- are members of an anti-decuplet of SU(3), decays to ground state baryons and mesons are calculated using an effective Lagrangian which incorporates chiral and SU(3) symmetry. We consider the possible quantum number assignments JΠ=12±,32± and calculate ratios of partial widths. The branching ratios of exotic cascades can be used to discriminate between even and odd parity pentaquarks. © 2004 Published by Elsevier B.V.
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