Resonant Structure of τ→ 3ππ⁰ντ and τ→ ωπντ Decays

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The resonant structure of the four pion final state in the decay τ→ 3ππ⁰ντ is analyzed using 4.27 million τ+τ- pairs collected by the CLEO II experiment. We search for second class currents in the decay τ→ ωπντ using spin-parity analysis and establish an upper limit on the non-vector current contribution. The mass and width of the ρ' resonance are extracted from a fit to the τ→ ωπντ spectral function. A partial wave analysis of the resonant structure of the τ→ 3ππ⁰ντ decay is performed; the spectral decomposition of the four pion system is dominated by the ωπ and a₁ π final states.