A search for the radiative decay of excited charged leptons, l*, and for radiative and weak decays of excited electron neutrinos, nu(e)*, is performed, using the 5.8 pb(-1) of data collected by ALEPH at 130-140 GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c(2) for all excited lepton species. Limits on the couplings, lambda/m(l*), of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c(2), these limits are 0.04GeV(-1) for mu* and tau*, and 0.0007GeV(-1) for e*. For nu(e)*, the limit is at the level of 0.03 GeV(-1) for a mass of 120 GeV/c(2), independent of the decay branching ratios.

D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Search for excited leptons at 130-140 GeV. PHYSICS LETTERS. SECTION B, 385, 445-453 [10.1016/0370-2693(96)00961-6].

Search for excited leptons at 130-140 GeV

CIOCCI, MARIA AGNESE;MARROCCHESI, PIER SIMONE;
1996-01-01

Abstract

A search for the radiative decay of excited charged leptons, l*, and for radiative and weak decays of excited electron neutrinos, nu(e)*, is performed, using the 5.8 pb(-1) of data collected by ALEPH at 130-140 GeV. No evidence for a signal is found in single or pair production. Excluded mass limits from pair production are close to 65 GeV/c(2) for all excited lepton species. Limits on the couplings, lambda/m(l*), of excited leptons are derived from single production. For an excited lepton mass of 130GeV/c(2), these limits are 0.04GeV(-1) for mu* and tau*, and 0.0007GeV(-1) for e*. For nu(e)*, the limit is at the level of 0.03 GeV(-1) for a mass of 120 GeV/c(2), independent of the decay branching ratios.
1996
D., B., I., D., D., D., P., G., C., G., J. P., L., et al. (1996). Search for excited leptons at 130-140 GeV. PHYSICS LETTERS. SECTION B, 385, 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/11365/38437
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