Garra Ticó, JordiGraugés Pous, EugeniBABAR Collaboration2019-07-252019-07-252009-07-220031-9007https://hdl.handle.net/2445/138269We report an analysis of τ − decaying into ω π − ν τ with ω → π + π − π 0 using a data sample containing nearly 320 × 10 6 τ 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.7 p.application/pdfeng(c) American Physical Society, 2009Física de partículesExperimentsParticle physicsExperimentsinfo:eu-repo/semantics/article5777442019-07-25info:eu-repo/semantics/openAccess