New Tests for Quark and Lepton Substructure
Abstract
If quarks and leptons are composite at the energy scale Λ, the strong forces binding their constituents induce flavor-diagonal contact interactions, which have significant effects at reaction energies well below Λ. Consideration of their effect on Bhabha scattering produces a new, stronger bound on the scale of electron compositeness: Λ>750 GeV. Collider experiments now being planned will be sensitive to Λ~1-5 TeV for both electrons and light quarks.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 1983
- DOI:
- 10.1103/PhysRevLett.50.811
- Bibcode:
- 1983PhRvL..50..811E
- Keywords:
-
- 12.35.Kw;
- 13.10+q;
- 14.60-z;
- 14.80.Dq