Thursday, March 15, 2012

1203.2840 (A. A. Bylinkin et al.)

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

A. A. Bylinkin, A. A. Rostovtsev
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.
View original: http://arxiv.org/abs/1203.2840

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