Search for second-class currents in τ-→ωπ-ντ

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doi:10.1103/PhysRevLett.103.041802

We report an analysis of τ- decaying into ωπ-ντ with ω→π+π-π0 using a data sample containing nearly 320×106τ pairs collected with the BABAR detector at the PEP-II B-Factory. We find no evidence for second-class currents, and we set an upper limit of 0.69% at 90% confidence level for the fraction of second-class currents in this decay mode.

Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for second-class currents in τ-→ωπ-ντ. PHYSICAL REVIEW LETTERS, 103(4) [10.1103/PhysRevLett.103.041802].