  We present a search for high-mass l+l- resonances in pp collisions at a
centre-of-mass energy of 7 TeV recorded by the ATLAS experiment in 2011. No
statistically significant excess above the Standard Model expectation is
observed in a dataset corresponding to an integrated luminosity of
approximately 1/fb. Consequently, upper limits are set on the cross-section
times branching ratio of resonances decaying to muon pairs as a function of the
resonance mass. In particular, a Sequential Standard Model Z' is excluded for
masses below 1.83 TeV, and a Randall-Sundrum Kaluza-Klein graviton with
coupling k/M_Pl = 0.1 is excluded for masses below 1.63 TeV, both at the 95%
C.L.
