Search for excited spin-3/2 and spin-1/2 leptons at linear colliders

Understand

We study the single production of excited spin-3/2 and spin-1/2 leptons in future high energy $e^+e^-$ collisions.

• We calculate the production cross section and decay widths of excited spin-3/2 and spin-1/2 leptons according to their effective currents.
• We show that these possible new excited states can be probed up to the mass $m^*$ ~ $\sqrt{s}$ depending on their couplings to leptons and gauge bosons.
• We present the angular distributions of final state particles as a measure to discriminate between an excited spin-3/2 and spin-1/2 lepton signal.