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Transverse Momentum Distributions And String Percolation Study In P+P, D+Au And Au+Au Collisions At Root S-Nn=200 Gev, B. K. Srivastava, R. P. Scharenberg, T. J. Tarnowsky

Department of Physics and Astronomy Faculty Publications

Multiparticle production at high energies is described in terms of color strings stretched between the projectile and target. As string density increases, overlap among the strings leads to cluster formation. At some critical density, a macroscopic cluster appears, spanning the entire system. This marks the percolation phase transition. Data from p+p, d + Au and Au + Au collisions at 200 GeV has been analyzed using the STAR detector to obtain the percolation density parameter, eta. For 200 GeV Au+Au collisions, the value of eta is found to lie above the critical percolation threshold, while for 200 GeV d+Au collisions …