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arXiv · 1102.1403

The Rise and Fall of the Ridge in Heavy Ion Collisions

Paul Sorensen·Boris Bolliet·Agnes Mocsy·Yadav Pandit·Navneet Pruthi
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Abstract

Recent data from heavy ion collisions at RHIC show unexpectedly large near-angle correlations that broaden longitudinally with increasing centrality. The amplitude of this ridge-like correlation rises rapidly, reaches a maximum, and then falls in the most central collisions. In this letter we explain how this behavior can be explained as initial-state coordinate-space anisotropies converted into final-state momentum-space correlations. We propose $v_n^2/\epsilon_{n,\mathrm{part}}^{2}$ as a useful way to study length scales and provide a prediction for the ridge in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=$ 2.76 TeV.

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Paul Sorensen, Boris Bolliet, Agnes Mocsy, Yadav Pandit, Navneet Pruthi. 2011-02-07. The Rise and Fall of the Ridge in Heavy Ion Collisions. https://doi.org/10.1016/j.physletb.2011.09.055

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