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Study of the Decay tau- 2pi- pi+ 3pi0 nutau$

CLEO Collaboration, S. Anderson et al

hep-exarXiv:hep-ex/9707027

Abstract

The decay tau- -> 2pi- pi+ 3pi0 nutau has been studied with the CLEO II detector at the Cornell Electron Storage Ring (CESR). The branching fraction is measured to be (2.85 +/- 0.56 +/- 0.51) x 10(-4). The result is in good agreement with the isospin expectation but somewhat below the Conserved-Vector-Current (CVC) prediction. We have searched for resonance substructure in the decay. Within the statistical precision, the decay is saturated by the channels tau- -> pi- 2pi0 omega nutau, 2pi- pi+ eta nutau, and pi- 2pi0 eta nutau. This is the first observation of this omega decay mode and the branching fraction is measured to be (1.89 +0.74/-0.67 +/- 0.40) x 10(-4).

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