New Tests for Quark and Lepton Substructure

1983/03/14 by E. Eichten, Kenneth Lane, Michael E. Peskin · 33 citations
Physics and Astronomy · #Collider #Dark Matter and Cosmic Phenomena #Electron #Lambda #Lepton #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Substructure

paper · doi:10.1103/physrevlett.50.811

openalex publication_date 1983/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

If quarks and leptons are composite at the energy scale \ensuremathΛ, the strong forces binding their constituents induce flavor-diagonal contact interactions, which have significant effects at reaction energies well below \ensuremathΛ. Consideration of their effect on Bhabha scattering produces a new, stronger bound on the scale of electron compositeness: \ensuremathΛ>750 GeV. Collider experiments now being planned will be sensitive to \ensuremathΛ\ensuremath∼1\ensuremath-5 TeV for both electrons and light quarks.

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