Search for a new heavy gauge boson W' with event signature electron plus missing transverse energy in p(p)over-bar collisions at root s=1.96 TeV

We present a search for a new heavy charged vector boson W' decaying to an electron- neutrino pair in p (p) over bar collisions at a center-of-mass energy of 1.96 TeV. The data were collected with the CDF II detector and correspond to an integrated luminosity of 5: 3 fb(-1). No significant excess above the standard model expectation is observed and we set upper limits on sigma . B(W' -> e nu). Assuming standard model couplings to fermions and the neutrino from the W' boson decay to be light, we exclude a W' boson with mass less than 1.12 TeV/c(2) at the 95% confidence level.