Search for excited taus from Z0 decays

Adeva, B. ; Adriani, O. ; Aguilar-Benitez, M. ; Gurtu, A. ; et., al (1990) Search for excited taus from Z0 decays Physics Letters B, 250 (1-2). pp. 205-211. ISSN 0370-2693

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We have searched for excited taus from Z0 decay in the channels e+e→ τ∗+τ∗→τ+τ-γγ and e+e→ ττ∗→τ+τγ, using the L3 detector at LEP. Using the τ∗ pair production channel, we can exclude a τ∗ up to a mass of 45.5 geV at 95% confidence level. We have also determined upper limits on the ττ∗Z0 and ττ∗γ couplings as a function of mτ∗ up to 89.3 GeV.

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Deposited On:21 Feb 2012 14:49
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