Preprint/Internal Report

DESY-2013-00559

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in 21 $fb^{−1}$ of pp collisions at $\sqrt{s} =8$ TeV with the ATLAS detector

ATLAS Collaboration (Collaboration author)DESY*

2013

Report No.: ATLAS-CONF-2013-035

Abstract: A search for the direct production of charginos and neutralinos in final states with three leptons (electrons or muons) and missing transverse momentum is presented. The analysis is based on 20.7] fb −1 of proton-proton collision data delivered by the LHC at s √ = 8 TeV and recorded by the ATLAS detector. No excess above the Standard Model expectation is observed in six signal regions that are either enriched or depleted in Z -boson decays. Limits are placed at the 95% confidence level on the masses of the charginos and neutralinos in simplified supersymmetric models. Chargino and heavy neutralino masses are excluded up to 600 GeV if these particles decay through sleptons and up to 315 GeV in cases where they decay via gauge bosons to a massless lightest neutralino.

Note: March 24, 2013;Copyright 2013 CERN for the benefit of the ATLAS Collaboration.

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Contributing Institute(s):

1. LHC/ATLAS Experiment (ATLAS)

Research Program(s):

1. Experiments at LHC (ATLAS) (POF2-512) (POF2-512)

Experiment(s):

1. LHC: ATLAS

Appears in the scientific report 2013

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