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Search for excited leptons at 130-GeV - 140-GeV

Buskulic, D. and Finch, Alexander (1996) Search for excited leptons at 130-GeV - 140-GeV. Physics Letters B, 385 (1-4). pp. 445-453. ISSN 0370-2693

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A search for the radiative decay of excited charged leptons, ℓ∗, and for radiative and weak decays of excited electron neutrinos, , 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/c2 for all excited lepton species. Limits on the couplings, , of excited leptons are derived from single production. For an excited lepton mass of 130 GeV/c2, these limits are 0.04 GeV−1 for μ∗ and τ∗, and 0.0007 GeV−1 for e∗. For , the limit is at the level of 0.03 GeV−1 for a mass of 120 GeV/c2, independent of the decay branching ratios.

Item Type: Journal Article
Journal or Publication Title: Physics Letters B
Departments: Faculty of Science and Technology > Physics
ID Code: 64039
Deposited By: ep_importer_pure
Deposited On: 14 May 2013 14:56
Refereed?: Yes
Published?: Published
Last Modified: 19 Jun 2018 03:38
Identification Number:

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