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

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

2007-09-13

arxiv.org/abs/0709.2134v1

Phys.Rev.D77:035002,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 8 figures, 5 tables

Scientific paper

10.1103/PhysRevD.77.035002

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. 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

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