Study of tau decays to six pions and a neutrino. Academic Article uri icon


  • The tau decays to six-pion final states have been studied with the CLEO detector at the Cornell Electron Storage Ring. The measured branching fractions are B(tau(-)-->2pi(-)pi(+)3pi(0)nu(tau)) = (2.2+/-0.3+/-0.4)x10(-4) and B(tau(-)-->3pi(-)2pi(+)pi(0)nu(tau)) = (1.7+/-0.2+/-0.2)x10(-4). A search for substructure in these decays shows that they are saturated by intermediate states with eta or omega mesons. We present the first observation of the decay tau(-)-->2pi(-)pi(+)omega(nu)tau and the branching fraction is measured to be (1.2+/-0.2+/-0.1)x10(-4). The measured branching fractions are in good agreement with the isospin expectations but somewhat below the conserved-vector-current predictions.

published proceedings

  • Phys Rev Lett

author list (cited authors)

  • Anastassov, A., Duboscq, J. E., Eckhart, E., Gan, K. K., Gwon, C., Hart, T., ... CLEO Collaboration.

publication date

  • January 1, 2001 11:11 AM