arXiv:hep-ph/0011077·v2·High Energy Physics — Phenomenology
t-channel production of heavy charged leptons
Shuquan Nie🇺🇸 · Marc Sher (William and Mary)🇺🇸
Abstract
We study the pair production of heavy charged exotic leptons at e+ e- colliders in the SU(2)_L x SU(2)_I x U(1)_Y model. This gauge group is a subgroup of the grand unification group E6; SU(2)_I commutes with the electric charge operator, and the three corresponding gauge bosons are electrically neutral. In addition to the standard photon and Z boson contributions, we also include the contributions from extra neutral gauge bosons. A t-channel contribution due to W_I-boson exchange, which is unsuppressed by mixing angles, is quite important. We calculate the left-right and forward-backward asymmetries, and discuss how to differentiate different models.
Comments: Increased discussion of experimental signatures. Version accepted by PRD