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

The STAR collaboration
J.Phys.G 34 (2007) 451-466, 2007.

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.

  • Table 3a

    STAR data from Figure 3 - left

    10.17182/hepdata.102948.v1/t1

    Per-particle fluctuation dependence on pseudorapidity scale $\delta\eta$ in central collisions.

  • Table 3c

    CERES data from Figure 3 - left

    10.17182/hepdata.102948.v1/t2

    Per-particle fluctuation dependence on pseudorapidity scale $\delta\eta$ in central collisions.

  • Table 3b

    Data from Figure 3 - right

    10.17182/hepdata.102948.v1/t3

    Centrality dependence of $$ fluctuations in the STAR acceptance for four energies. $\nu$ is the mean participant path length (please...

  • Table 4a

    Data from Figure 4 - left

    10.17182/hepdata.102948.v1/t4

    $\sqrt{s_{NN}}$ dependence of $$ fluctuations for central collisions and STAR full acceptance. CERES fluctuation data (12.3 and 17.3 GeV) were...

  • Table 4b

    Data from Figure 4 - right

    10.17182/hepdata.102948.v1/t5

    Hijing-1.37 $$ fluctuations for central collisions and the STAR acceptance at three energies, for quench-on, quench-off and jets-off collisions.

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