ISSN:
1434-6052
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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〈0.007 (95% CL). Within the 3 charged track final stateB(τ −→π − π + π − v)/(B(τ −→π − π + π − v)+B(τ −→π − π + π − π 0 v))=0.37 −0.20 +0.35
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01551794
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