Phys. Rev. D 61, 112002 (2000) [19 pages]

Hadronic structure in the decay τ-→π-π0ντ

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S. Anderson et al. (CLEO Collaboration)
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Received 21 October 1999; published 3 May 2000

We report on a study of the invariant mass spectrum of the hadronic system in the decay τ-→π-π0ντ. This study was performed with data obtained with the CLEO II detector operating at the CESR e+e- collider. We present fits to phenomenological models in which resonance parameters associated with the ρ(770) and ρ(1450) mesons are determined. The π-π0 spectral function inferred from the invariant mass spectrum is compared with data on e+e-→π+π- as a test of the conserved vector current theorem. We also discuss the implications of our data with regard to estimates of the hadronic contribution to the muon anomalous magnetic moment.


©2000 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevD.61.112002
DOI: 10.1103/PhysRevD.61.112002
PACS: 13.35.Dx, 13.25.Jx, 13.40.Gp, 14.40.Cs

* 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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