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The production and decay of Tau leptons ine + e ? annihilation at PETRA energies
- Source :
- Zeitschrift f�r Physik C Particles and Fields. 26:521-530
- Publication Year :
- 1985
- Publisher :
- Springer Science and Business Media LLC, 1985.
-
Abstract
- We have observed τ pair production at average CM energies of 13.9, 22.3, 34.5 and 43.1 GeV. The cross-sections are consistent with QED, the cut off parameters beingΛ +>161 GeV andΛ −169 GeV (95% CL). The topological branching fraction of the τ to 1 charged particle,B 1, is 0.847±0.011 (stat) −0.013 +0.016 (syst) and no decays to 5 charged particles were observed resulting inB 5
Details
- ISSN :
- 14346052 and 01709739
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- Zeitschrift f�r Physik C Particles and Fields
- Accession number :
- edsair.doi.dedup.....d0be06a57be4aa30d80690a01094a171