Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-06-30
Physics
Nuclear Physics
Nuclear Experiment
Proceedings of presentation given at Quark Matter 2011
Scientific paper
Measurements of charged dihadron DeltaEta-DeltaPhi correlations from the CMS collaboration are presented for PbPb collisions at a center-of-mass energy of 2.76 TeV per nucleon pair over a broad range of pseudorapidity and the full range of azimuthal angle. A significant correlated yield is observed for pairs of particles with small DeltaPhi but large longitudinal separation DeltaEta, commonly known as the "ridge". The ridge persists up to at least |DeltaEta| = 4 and the dependence of the ridge region shape and yield on collision centrality and transverse momentum has been measured. A Fourier analysis of the long-range two-particle correlation is presented and discussed in the context of higher order flow coefficients.
Callner Jeremy
for the CMS Collaboration
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