Search for heavy neutral resonances with the ATLAS detector at the LHC

Searches for a heavy neutral particle decaying into di-lepton pairs are presented, including electrons, muons, taus and lepton-flavor-violating decays. The analyses are based on 8 TeV data collected with the ATLAS detector at the Large Hadron Collider. These signatures constitute some of the most promising channels in searches for new physics. Many Beyond Standard Model (BSM) scenarios predict the existence of an additional neutral, spin-1 vector gauge boson, customarily referred to as Z′ boson, decaying in a pair of leptons. Moreover, some of those models, such as the Sequential Standard Model (SSM) or the R-parity violating (RPV) supersymmetry (SUSY), can be extended to include lepton-flavor-violating (LFV) couplings for the Z′. Observations are consistent with the Standard Model predictions, and limits are set on the masses of these resonances.