Search for a New Heavy Gauge Boson Wprime with Electron + missing ET Event Signature in ppbar collisions at sqrt(s)=1.96 TeV

We present a search for a new heavy charged vector boson $W^{\mathrm{\prime }}$ decaying to an electron-neutrino pair in $p\bar{p}$ collisions at a center-of-mass energy of $1.96\text{unit}TeV$. The data were collected with the CDF II detector and correspond to an integrated luminosity of $5.3\text{unit}{fb}^{-1}$. No significant excess above the standard model expectation is observed and we set upper limits on $\sigma \cdot \mathcal{B}(W^{\mathrm{\prime }}\to e\nu )$. Assuming standard model couplings to fermions and the neutrino from the $W^{\mathrm{\prime }}$ boson decay to be light, we exclude a $W^{\mathrm{\prime }}$ boson with mass less than $1.12\text{unit}TeV\mathrm{/}{c}^2$ at the 95\unit{%} confidence level.