An investigation on spin-3/2 top quark excitation at muon-antimuon colliders

摘要

We consider the pair production of spin-3/2 top quark excitation at future muon-antimuon (μ~+μ~-) colliders. The right-handed excited spin-3/2 top quark is expected to be the lightest spin-3/2 excited state in string realisations of Randall-Sundrum scenario in the context of higher-spin Regge excitations. We give the effective lagrangians describing the spin-3/2 excited top quark interactions, decay widths and cross sections. We analyze the pair production of excited spin-3/2 top quarks and give the comparative results for the future electron-positron colliders.