Comparative Analysis of Pion, Kaon and Proton Spectra Produced at PHENIX

Details Comparative Analysis of Pion, Kaon and Proton Spectra Produced at PHENIX Comparative Analysis of Pion, Kaon and Proton Spectra Produced at PHENIX

2012-03-13

arxiv.org/abs/1203.2840v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

The shapes of invariant differential cross section for identified pi,K, p and pbar production as function of transverse momentum measured in pp collisions by the PHENIX detector are analyzed. Simultaneous fit of these data to the sum of exponential and power-law terms show significant difference in the exponential term contributions. This effect qualitatively explains the observed shape of the experimental K/pi and p/pi yield ratios measured as function of transverse momentum of produced hadrons. A picture with two types of mechanisms for hadron production is given.

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