Using data collected with the L3 detector near the Z resonance, corresponding to an integrated luminosity of 150 pb-l, the branching fractions of the tau lepton into electron and muon are measured to be beta(tau --> e)over bar>(e)nu (tau)) = (17.806 +/- 0.104 (stat.) +/- 0.076 (syst.))%, beta(tau --> mu)over bar>(mu)nu (tau)) = ( 17.342 +/- 0.110 (stat.) +/- 0.067 (syst.))%. From these results the ratio of the charged current coupling constants of the muon and the electron is determined to be g(mu)/g(e) = 1.0007 +/- 0.0051. Assuming electron-muon universality, the Fermi constant is measured in tau lepton decays as G(F) = (1.1616 +/- 0.0058) x 10(-5) GeV(-2). Furthermore, the coupling constant of the strong interaction at the tau mass scale ...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance corresponding to an integrated lumino...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 ...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
Using data collected with the L3 detector near the Z resonance corresponding to an integrated lumino...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 ...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and...
A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and...
Using data collected with the L3 detector near the Z resonance, corresponding to an integrated lumin...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...
A sample of 25000 \Z\rightarrow\tt events collected by the DELPHI experiment at LEP in 1991 and 1992...