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arXiv · hep-ph/0401107

Determining Pentaquark Quantum Numbers from Strong Decays

Thomas Mehen·Carlos Schat
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Abstract

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 $J^Π={1/2}^\pm,{3/2}^\pm$ and calculate ratios of partial widths. The branching ratios of exotic cascades can be used to discriminate between even and odd parity pentaquarks.

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Thomas Mehen, Carlos Schat. 2004-03-18. Determining Pentaquark Quantum Numbers from Strong Decays. https://doi.org/10.1016/j.physletb.2004.03.039

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