For a massive Rarita-Schwinger spin-3/2 fermion coupled to photons, the tree-level Bhabha-like differential cross-section is derived at finite temperature, with a claimed T squared high-temperature growth.
Search for excited spin-3/2 and spin-1/2 leptons at linear colliders
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abstract
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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Bhabha-like scattering in the Rarita-Schwinger model at finite temperature
For a massive Rarita-Schwinger spin-3/2 fermion coupled to photons, the tree-level Bhabha-like differential cross-section is derived at finite temperature, with a claimed T squared high-temperature growth.