Determining Pentaquark Quantum Numbers from Strong Decays

Details Determining Pentaquark Quantum Numbers from Strong Decays Determining Pentaquark Quantum Numbers from Strong Decays

2004-01-14

arxiv.org/abs/hep-ph/0401107v2

Phys.Lett. B588 (2004) 67-73

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, references added, accepted for publication in PLB

Scientific paper

10.1016/j.physletb.2004.03.039

Assuming that the recently observed $\Theta^+$ and $\Xi^{--}$ 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 $J^\Pi ={1/2}^\pm,{3/2}^\pm$ 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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