Mass limits for excited electrons and muons from Z0 decay

We searched for excited electrons and muons from Z 0 decay in the channels ee→eeγ, ee→eeγγ, ee→(e)eγ, ee→μμγ, ee→μμγγ. using the L3 detector at LEP. The lower mass limit for e ∗ is 45.0 GeV and for μ ∗ 45.3 GeV. The upper limits of ℓℓ ∗ Z 0 and ℓℓ ∗ γ couplings at 95% CL have been determined up to m ℓ∗ close to the Z 0 mass.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: leptonic decay
leptonic decay: Z0
lepton: excited state
excited state: radiative decay

References(9)

Figures(0)

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