We have observed over 10(2) events of the type W --> tau-v followed by tau --> hadrons, where the taus are identified by their decay into one or three charged particles. We measure the cross section times branching ratio for ppBAR --> W --> tau-v and compare it to the value for W --> ev to directly measure the ratio of weak coupling constants g(tau)/g(e). We find g(tau)/g(e) = 0.97 +/- 0.07, consistent with lepton universality.
MEASUREMENT OF THE RATIO BETA(W-]TAU-NU)/BETA(W-]E-NU) IN P(P)BAR COLLISIONS AT ROOT-S=1.8 TEV
DELL'ORSO, MAURO;PUNZI, GIOVANNI;
1992-01-01
Abstract
We have observed over 10(2) events of the type W --> tau-v followed by tau --> hadrons, where the taus are identified by their decay into one or three charged particles. We measure the cross section times branching ratio for ppBAR --> W --> tau-v and compare it to the value for W --> ev to directly measure the ratio of weak coupling constants g(tau)/g(e). We find g(tau)/g(e) = 0.97 +/- 0.07, consistent with lepton universality.File in questo prodotto:
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