Search for supersymmetry with jets, missing transverse momentum and one or more tau leptons in proton-proton collisions at sqrt{s}=7 Tev with the ATLAS detector

A search for production of supersymmetric particles in final states containing jets, missing transverse momentum, and one or more tau leptons is presented. The data were recorded by the ATLAS experiment in sqrt(s)=7 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 2.05 fb-1 of data. The results are interpreted in the context of GMSB models with m_mess=250 TeV, N_5=3, mu>0, and C_grav=1, excluding the production of supersymmetric particles up to Lambda=40 Tev for tan(beta)>15 at 95% C.L.