Search for new phenomena in the WW to ℓνℓ' ν' final state in pp collisions at s√=7 TeV with the ATLAS detector

Abstract

This Letter reports a search for a heavy particle that decays to W W using events produced in pp collisions at √s = 7 TeV. The data were recorded in 2011 by the ATLAS detector and correspond to an integrated luminosity of 4.7 fb−1. W W → ν ν ( , = e or μ) final states are considered and the distribution of the transverse mass of the W W candidates is found to be consistent with Standard Model expectations. Upper limits on the production cross section times branching ratio into W boson pairs are set for Randall–Sundrum and bulk Randall–Sundrum gravitons, which result in observed 95% CL lower limits on the masses of the two particles of 1.23 TeV and 0.84 TeV, respectively.