The ALICE experiment at the Large Hadron Collider at CERN is optimized to study the properties of the hot, dense matter created in high energy nuclear collisions in order to improve our understanding of the properties of nuclear matter under extreme
conditions. In 2009 the first proton beams were collided at the Large Hadron collider and since then data from proton-proton collisions at $sqrt{s}$ = 0.9, 2.36, 2.76, and 7 TeV have been taken. Results from pp collisions provide significant constraints on models. In particular, results on strange particles indicate that Monte Carlo generators still have considerable difficulty describing strangeness production. In 2010 the first lead nuclei were collided at $sqrt{s_{NN}}$ = 2.76 TeV. Results from Pb+Pb demonstrate suppression of particle production relative to that observed in pp collisions, consistent with expectations based on data available at lower energies.
Two-particle azimuthal ($Deltaphi$) and pseudorapidity ($Deltaeta$) correlations using a trigger particle with large transverse momentum ($p_T$) in $d$+Au, Cu+Cu and Au+Au collisions at $sqrt{s_{{NN}}}$ =xspace 62.4 GeV and 200~GeV from the STAR expe
riment at RHIC are presented. The s correlation is separated into a jet-like component, narrow in both $Deltaphi$ and $Deltaeta$, and the ridge, narrow in $Deltaphi$ but broad in $Deltaeta$. Both components are studied as a function of collision centrality, and the jet-like correlation is studied as a function of the trigger and associated $p_T$. The behavior of the jet-like component is remarkably consistent for different collision systems, suggesting it is produced by fragmentation. The width of the jet-like correlation is found to increase with the system size. The ridge, previously observed in Au+Au collisions at $sqrt{s_{{NN}}}$ = 200 GeV, is also found in Cu+Cu collisions and in collisions at $sqrt{s_{{NN}}}$ =xspace 62.4 GeV, but is found to be substantially smaller at $sqrt{s_{{NN}}}$ =xspace 62.4 GeV than at $sqrt{s_{{NN}}}$ = 200 GeV for the same average number of participants ($ langle N_{mathrm{part}}rangle$). Measurements of the ridge are compared to models.
