Hadronic structure in the decay τ--->π-π0ντ
Abstract
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.
- Publication:
-
Physical Review D
- Pub Date:
- June 2000
- DOI:
- 10.1103/PhysRevD.61.112002
- arXiv:
- arXiv:hep-ex/9910046
- Bibcode:
- 2000PhRvD..61k2002A
- Keywords:
-
- 13.35.Dx;
- 13.25.Jx;
- 13.40.Gp;
- 14.40.Cs;
- Decays of taus;
- Decays of other mesons;
- Electromagnetic form factors;
- Other mesons with S=C=0 mass<
- 2.5 GeV;
- High Energy Physics - Experiment
- E-Print:
- 39 pages postscript, also available through http://w4.lns.cornell.edu/public/CLNS