Search for signatures of dilepton gauge bosons in HERA and LEPII-LHC

We examine the prospects of searching for dilepton gauge bosons in e− p colliders. Specifically we take a SU(3)c × SU(3)L × U(1)x model and calculate the cross section for the process, e−p → e+ + D + anything, mediated by doubly-charged dilepton gauge bosons, where D is a new quark predicted by the model. At HERA, with center-of-mass energy √s = 314 GeV and the integrated luminosity 100 pb−1, we can obtain the signature of dileptons with mass up to 340 GeV (650 GeV) if D has a mass lighter than 200 GeV (150 GeV). At LEPII-LHC, with center-of-mass energy √s = 1790 GeV and an anticipated luminosity 6 fb−1 yr−1, we expect more than 280 events per year provided that both the mass of dileptons and that of the D-quarks is less than 1 TeV.