Phys. Rev. D 61, 052004 (2000) [11 pages]

Structure functions in the decay τ→ππ0π0ντ

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T. E. Browder et al. (CLEO Collaboration)
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Received 16 August 1999; published 11 February 2000

Using the CLEO II detector operating at the Cornell Electron Storage Ring (CESR) e+e- collider, we have measured the structure functions in the decay τ→ππ0π0ντ, based on a sample corresponding to 4×106 produced τ-pair events. We determine the integrated structure functions, which depend only on the three pion invariant mass, as well as the structure functions differential in the Dalitz plot variables. We extract model independent limits on non-axial-vector contributions from the measured structure functions as less than 16.6% of the total branching fraction, at the 95% confidence level. Separating the non-axial-vector contributions into scalar and vector contributions, we measure that scalars (vectors) contribute with less than 9.4% (7.3%) to the total branching fraction, at the 95% confidence level.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.61.052004
DOI: 10.1103/PhysRevD.61.052004
PACS: 13.25.Jx, 13.35.Dx, 14.40.Cs, 14.60.Fg

* Permanent address: University of Texas–Pan American, Edinburg, TX 78539.
Permanent address: Yonsei University, Seoul 120-749, Korea.
Permanent address: University of Cincinnati, Cincinnati, OH 45221.

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