# IOP 2014 Joint HEPP & APP Group Meeting

Apr 7 – 9, 2014
Royal Holloway, University of London
Europe/London timezone
Institute of Physics 2014 Joint High Energy Particle Physics and Astro Particle Physics Groups Annual Meeting

## Search for high-mass dilepton resonances in 21 fb$^{−1}$ of $pp$ collisions at $\sqrt{s} =$ 8 TeV with the ATLAS experiment

Apr 8, 2014, 5:30 PM
15m
Room D (Windsor Building)

### Room D

#### Windsor Building

contributed talk The Energy Frontier Programme

### Speaker

Marc Bret Cano (University of London (GB))

### Description

The ATLAS detector at the Large Hadron Collider is used to search for high mass resonances decaying to an electron-positron pair or a muon-antimuon pair. Results are presented from the analysis of pp collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of approximately 21 $fb^{−1}$. A narrow resonance with Standard Model Z couplings to fermions is excluded at 95% C.L. for masses below 2.79 TeV in the electron channel, 2.53 TeV in the muon channel, and 2.90 TeV in the two channels combined. Limits on other model interpretations are also presented, including a Grand Unification model based on the E6 gauge group, $Z^∗$ bosons, Minimal $Z^{'}$ Models, a spin-2 Randall-Sundrum graviton, quantum black holes and a Minimal Walking Technicolor model with a composite Higgs boson.

### Primary authors

Frank Ellinghaus (Johannes-Gutenberg-Universitaet Mainz) Marc Bret Cano (University of London (GB)) Rozmin Daya (Southern Methodist University (US)) Simon Viel (University of British Columbia (CA)) Stephane Willocq (University of Massachusetts (US))

 Slides