We have measured the reaction ee → μμ and ee → ττ at center of mass energies from 9.4 to 31.6 GeV. The production cross sections are in agreement with the predictions of quantum electrodynamics, resulting in cutoff parameter limits of 70–100 GeV at 95% c.l. The branching ratio for τ → μν ν has been determined as [1.78 ± 2.0 (statist.) ± 1.8(syst.)]% The existence of a new sequential heavy lepton with a mass <14.5 GeV is excluded at 95% c.l
A search for pair-production of long-lived, heavy, singly-charged particles has been performed with ...
A search for heavy leptons has been carried out with the Frascati e+e− storage ring by looking for (...
Events of the type e + e − →μ ± +e ∓ + “nothing” have been observed in the magnetic detector PLUTO a...
We have measured the reaction ee → μμ and ee → ττ at center of mass energies from 9.4 to 31.6 GeV. T...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for excited leptons e ∗ , μ ∗ , τ ∗ and ν e ∗ in e + e − collisions at s =161 GeV is perfor...
A search for pair production of fourth-generation sequential leptons in e+e- annihilation at a cente...
We have searched for the annihilation of e+e- into the exclusive channels e and at s =29 GeV, using ...
A search for excited leptons e∗, μ∗, Τ∗ and ν∗c ine+e− collisions at √s = 161 GeV is performed using...
We have searched for unstable neutral and charged heavy leptons, N and L±, and for excited states of...
We report on a search for the excited leptons e ∗ , μ ∗ , τ ∗ and ν ∗ in e + e − collisions at s = 1...
A search for pair-production of long-lived, heavy, singly-charged particles has been performed with ...
A search for heavy leptons has been carried out with the Frascati e+e− storage ring by looking for (...
Events of the type e + e − →μ ± +e ∓ + “nothing” have been observed in the magnetic detector PLUTO a...
We have measured the reaction ee → μμ and ee → ττ at center of mass energies from 9.4 to 31.6 GeV. T...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for pair production of new heavy leptons has been performed assuming different scenarios fo...
A search for excited leptons e ∗ , μ ∗ , τ ∗ and ν e ∗ in e + e − collisions at s =161 GeV is perfor...
A search for pair production of fourth-generation sequential leptons in e+e- annihilation at a cente...
We have searched for the annihilation of e+e- into the exclusive channels e and at s =29 GeV, using ...
A search for excited leptons e∗, μ∗, Τ∗ and ν∗c ine+e− collisions at √s = 161 GeV is performed using...
We have searched for unstable neutral and charged heavy leptons, N and L±, and for excited states of...
We report on a search for the excited leptons e ∗ , μ ∗ , τ ∗ and ν ∗ in e + e − collisions at s = 1...
A search for pair-production of long-lived, heavy, singly-charged particles has been performed with ...
A search for heavy leptons has been carried out with the Frascati e+e− storage ring by looking for (...
Events of the type e + e − →μ ± +e ∓ + “nothing” have been observed in the magnetic detector PLUTO a...