Search for resonant diboson production in the WW/WZ -> lvjj decay channels with the ATLAS detector at √s=7 TeV

Abstract

A search for resonant diboson production using a data sample corresponding to 4.7 fb−1 of integrated luminosity collected by the ATLAS experiment at the Large Hadron Collider in 𝑝⁢𝑝 collisions at √𝑠 =7 TeV is presented. The search for a narrow resonance in the 𝑊⁢𝑊 or 𝑊⁢𝑍 mass distribution is conducted in a final state with an electron or a muon, missing transverse momentum, and at least two jets. No significant excess is observed and limits are set using three benchmark models: 𝑊⁢𝑊 resonance masses below 940 and 710 GeV are excluded at 95% confidence level for spin-2 Randall–Sundrum and bulk Randall–Sundrum gravitons, respectively; 𝑊⁢𝑍 resonance masses below 950 GeV are excluded at 95% confidence level for a spin-1 extended gauge model 𝑊′ boson.