. Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in sqrt(s) = 8TeV pp collisions with the ATLAS detector

ATLAS COLLABORATION, G. AAD, F. MONTICELLI, ET AL

JOURNAL OF HIGH ENERGY PHYSICS

SPRINGER

Lugar: Berlin; Año: 2014 vol. 231 p. 1 - 23

1126-6708

A search for the direct production of charginos and neutralinos in final states with three leptons√and missing transverse momentum is presented. The analysis is based on 20.3 fb−1 of s = 8 TeVproton?proton collision data delivered by the Large Hadron Collider and recorded with the ATLASdetector. Observations are consistent with the Standard Model expectations and limits are set in R-parity-conserving phenomenological Minimal Supersymmetric Standard Models and in simplified su-persymmetric models, significantly extending previous results. For simplified supersymmetric models ̃0 ̃±of direct chargino (χ1 ) and next-to-lightest neutralino (χ2 ) production with decays to lightest neutralino ̃± ̃0(χ1 ) via either all three generations of sleptons, staus only, gauge bosons, or Higgs bosons, χ1 andχ0 masses are excluded up to 700 GeV, 380 GeV, 345 GeV , or 148 GeV respectively, for a massless ̃2χ0 .