Discovery Potential of $W' \rightarrow e \nu$ at CMS

Heavy vector bosons such as a ${\rm W'}$ are predicted by several theories. The heavy vector boson $\rm{W'}$ can decay into a charged lepton (electron, muon, tau) and a neutrino, thus providing a clear, almost background-free signature. Here we discuss the channel ${\rm W^{\prime} \to e} \nu $, and study the necessary luminosity for its discovery or exclusion. Data driven methods for the control of the background are discussed, appropriate for the preparation for first data. The discovery potential and exclusion limit for a ${\rm W'}$ heavy vector boson, including systematic effects for $ {\rm 100~pb^{-1}} $ integrated luminosity, are presented.