Journal article

### Search for the decay τ- →π-3π+(π0)vτ

Abstract:
We have searched for the decay of the τ lepton into seven charged particles and zero ot one π0. The data used in the search were collected with the CLEO II detector at the Cornell Electron Storage Ring (CESR) and correspond to an integrated luminosity of 4.61 fb-1. No evidence for a signal is found. Assuming all the charged particles are pions, we set an upper limit on the branching fraction B(τ-→4π-3π+(π 0)vτ)<2.4×10-6 at the 90% confidence level. This limit represents a significant improvement over the previous limit.

### Authors

Journal:
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume:
56
Issue:
9
Publication date:
1997-11-01
ISSN:
0556-2821
URN:
uuid:e2ed3254-7d78-45f0-aecf-cf13471f1af2
Source identifiers:
321859
Local pid:
pubs:321859
Language:
English