Search for SUSY in events with a photon, jets and MET

ALONSO FRANCISCO

Paris

Seminario; Seminario en el LPNHE, Universidad de Paris Diderot 7; 2014

Supersymmetry (SUSY) introduces a simmetry between fermions and bosons, resulting in a SUSY partner (sparticle) with identical quantum numbers except a difference by a half a unit of spin for each Standar Model particle. As none of these sparticles have been observed, SUSY must be a broken symmetry if realised in nature.In gauge-mediated SUSY breaking (GMSB) models, the LSP is the gravitino, and its experimental signatures are largely determined by the nature ofthe next-to-lightest SUSY particle, which for a large part of the GMSB parameter space is the lightest neutralino. The lightest neutralino is a mixture of gaugino and higgsino eigenstates, and thereforedecays to either a , Z or a Higgs boson 1. Searches for SUSY in ATLAS with photons in the final state have been done for photon+MET, photon+ (lepton/b)+MET. Here we focus in photon+jets+MET. In this talk I will present the status of the analysis in the search of SUSY with one photon+jets+MET in the final state using the data collected with the ATLAS detector in the LHC in pp collisions at 8 TeV.