Search for a heavy gauge boson W′ in the final state with an electron and large missing transverse energy in pp collisions at s=7TeV

A search for a heavy gauge boson W′ has been conducted by the CMS experiment at the LHC in the decay channel with an electron and large transverse energy imbalance ETmiss, using proton-proton collision data corresponding to an integrated luminosity of 36pb−1. No excess above standard model expectations is seen in the transverse mass distribution of the electron-ETmiss system. Assuming standard-model-like couplings and decay branching fractions, a W′ boson with a mass less than 1.36TeV/c2 is excluded at 95% confidence level.