System-size dependence of transverse momentum correlations at √sNN=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2013

System-size dependence of transverse momentum correlations at √sNN=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider

L. Adamczyk
  • Function : Author

Abstract

We present a study of the average transverse momentum ($p_t$) fluctuations and $p_t$ correlations for charged particles produced in Cu+Cu collisions at midrapidity for $\sqrt{s_{NN}} =$ 62.4 and 200 GeV. These results are compared with those published for Au+Au collisions at same energies, to explore the system size dependence. In addition to the collision energy and system size dependence, the $p_t$ correlations results have been studied as functions of the collision centralities, the ranges in $p_t$, the pseudo-rapidity $\eta$, and the azimuthal angle $\phi$, for which the correlations are measured. The square root of the measured $p_t$ correlations when scaled by mean-$p_t$ are found to be independent of both colliding beam energy and system size studied. The transport based model calculations are found to have a better quantitative agreement with the measurements compared to models which incorporate only jet-like correlations.

Dates and versions

in2p3-00807105 , version 1 (03-04-2013)

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Cite

L. Adamczyk, W. Borowski, S. Kabana. System-size dependence of transverse momentum correlations at √sNN=62.4 and 200 GeV at the BNL Relativistic Heavy Ion Collider. Physical Review C, 2013, 87, pp.064902. ⟨10.1103/PhysRevC.87.064902⟩. ⟨in2p3-00807105⟩
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