We study the LHC signatures of new gauge bosons in the gauge-invariant minimal Higgsless model. It predicts an extra pair of $W_1$ and $Z_1$ bosons which can be as light as $\sim 400\mathrm{GeV}$ and play a key role in the delay of unitarity violation. We analyze the $W_1$ signals in $pp\to W_0{Z}_0{Z}_0\to jj4\ell$ and $pp\to W_0{Z}_{0}jj\to \nu 3\ell jj$ processes at the LHC, including the complete electroweak and QCD backgrounds. We reveal the complementarity between these two channels for discovering the $W_1$ boson, and demonstrate the LHC discovery potential over the full range of allowed $W_1$ mass.

• Received 24 August 2007

DOI:https://doi.org/10.1103/PhysRevD.78.031701