Search for Second-Class Currents in tau- -> omega.pi-.nu_tau
arXiv:0904.3080 · doi:10.1016/j.nuclphysbps.2009.03.021
Abstract
We report an analysis of tau- decaying into omega.pi-.nu_tau with omega -> pi+pi-pi0 using a data sample containing nearly 320 million tau 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.
Submitted to Phys. Rev. Lett