Upper limits on doubly charged bilepton couplings and masses are extracted from CERN LEP data for Bhabha scattering in the energy range $\sqrt{s}=183\mathrm{}–202\mathrm{GeV}$ using the standard model program ZFITTER, which calculates radiative corrections. We find that $g_L^2{/M}_L^2<{O(10\mathrm{}}^{-5}){\mathrm{GeV}}^{-2}$ at 95% C.L. for scalar and vector bileptons.

• Received 2 July 2003

DOI:https://doi.org/10.1103/PhysRevD.68.093008