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

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Cakir O., OZANSOY A.

PHYSICAL REVIEW D, vol.77, no.3, 2008 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 77 Issue: 3
  • Publication Date: 2008
  • Doi Number: 10.1103/physrevd.77.035002
  • Journal Name: PHYSICAL REVIEW D
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Ankara University Affiliated: Yes


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(*)similar to root 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. The signals and the corresponding backgrounds are studied in detail to obtain attainable limits on masses and couplings of excited leptons at future linear colliders.