Wednesday, August 1, 2012

1207.7187 (Andreas Morsch et al.)

Jet-like near-side peak shapes in Pb-Pb collisions at sqrt(s_NN) = 2.76
TeV with ALICE
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Andreas Morsch, for the ALICE Collaboration
We present preliminary results from di-hadron correlations in azimuth (phi) and pseudo-rapidity (eta) induced by hadronic di-jets produced in Pb-Pb collisions at sqrt(s_NN) = 2.76 TeV. The jet-like near-side peak has been isolated from eta-independent collective flow correlations using an eta-gap method and its shape has been characterized by rms and excess kurtosis. These quantities have been studied as a function of centrality as well as of trigger (associated) particle transverse momentum ranging from 2-8 GeV (1-3 GeV). We observe that the rms in Deta increases with the centrality of the collisions whereas the rms in Dphi stays constant within experimental uncertainties.
View original: http://arxiv.org/abs/1207.7187

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