Universality of identified hadron production in collisions
Institute for Theoretical and Experimental Physics, ITEP, Moscow, Russia
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Accepted: 9 May 2014
Published online: 20 May 2014
The shapes of invariant differential cross section for identified and production as a function of transverse momentum measured in collisions by the PHENIX detector are analyzed in terms of a recently introduced approach. Simultaneous fits of these data to the sum of exponential and power-law terms show a significant difference in the exponential term contributions. This effect qualitatively explains the observed shape of the experimental and yield ratios measured as a function of transverse momentum of produced hadrons. A picture with two types of mechanisms for hadron production is presented. Universality of the power-law term behavior for , and production is shown.
© SIF and Springer-Verlag Berlin Heidelberg, 2014