The energy dependence of $p_t$ angular correlations inferred from mean-$p_t$ fluctuation scale dependence in heavy ion collisions at the SPS and RHIC

Abstract

We present the first study of the energy dependence of $p_t$ angular correlations inferred from event-wise mean transverse momentum $<p_t>$ fluctuations in heavy ion collisions. We compare our large-acceptance measurements at CM energies $\sqrt{s_{NN}}=$ 19.6, 62.4, 130 and 200 GeV to SPS measurements at 12.3 and 17.3 GeV. $p_t$ angular correlation structure suggests that the principal source of $p_t$ correlations and fluctuations is minijets (minimum-bias parton fragments). We observe a dramatic increase in correlations and fluctuations from SPS to RHIC energies, increasing linearly with $\ln \sqrt{s_{NN}}$ from the onset of observable jet-related $<p_t>$ fluctuations near 10 GeV.

10 pages, 4 figures

References in corpus (11)

• Incident energy dependence of pt correlations at relativistic energies
• Transverse Momentum Fluctuations in Nuclear Collisions at 158 AGeV
• Correlations from p-p collisions at $\sqrt{s}=200$ GeV
• Event-by-Event Fluctuations at 40, 80, and 158 AGeV/c in Pb+Au Collisions
• Pseudorapidity Asymmetry and Centrality Dependence of Charged Hadron Spectra in d+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Autocorrelations from fluctuation scale dependence by inversion
• Hadronization geometry from net-charge angular correlations on momentum subspace ($\eta ,\varphi$) in Au-Au collisions at $\sqrt{s_{NN}}=130$ GeV
• Autocorrelations from the scale dependence of transverse-momentum fluctuations in Hijing-simulated Au-Au collisions at $\sqrt{s_{NN}}=$ 200 GeV
• Event-by-event average $p_T$ fluctuations in PHENIX: measurements and jet contribution simulations
• The equivalence of fluctuation scale dependence and autocorrelations
• Transverse Momentum Correlations in Relativistic Nuclear Collisions

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