A search for the radiative decay of excited charged leptons, ℓ*, and for radiative and weak decays of excited electron neutrinos, νe*, is performed, using the 5.8 pb-1 of data collected by ALEPH at 130-140GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c2 for all excited lepton species. Limits on the couplings, λ/mℓ*, of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c2, these limits are 0.04GeV-1 for μ* and τ*, and 0.0007GeV-1 for e* For νe*, the limit is at the level of 0.03 GeV-1 for a mass of 120GeV/c2, independent of the decay branching ratios.

Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1996). Search for excited leptons at 130-140 GeV. PHYSICS LETTERS. SECTION B, 385(1-4), 445-453 [10.1016/0370-2693(96)00961-6].

Search for excited leptons at 130-140 GeV

CARPINELLI, Massimo;
1996

Abstract

A search for the radiative decay of excited charged leptons, ℓ*, and for radiative and weak decays of excited electron neutrinos, νe*, is performed, using the 5.8 pb-1 of data collected by ALEPH at 130-140GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c2 for all excited lepton species. Limits on the couplings, λ/mℓ*, of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c2, these limits are 0.04GeV-1 for μ* and τ*, and 0.0007GeV-1 for e* For νe*, the limit is at the level of 0.03 GeV-1 for a mass of 120GeV/c2, independent of the decay branching ratios.
Articolo in rivista - Articolo scientifico
Physics
English
1996
385
1-4
445
453
none
Buskulic, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J., et al. (1996). Search for excited leptons at 130-140 GeV. PHYSICS LETTERS. SECTION B, 385(1-4), 445-453 [10.1016/0370-2693(96)00961-6].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390225
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