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Measurement of Non-Random Event-by-Event Fluctuations of Average Transverse Momentum in sqrt(s_NN)=200 GeV Au+Au and p+p Collisions

the PHENIX Collaboration·S. S. Adler
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Abstract

Event-by-event fluctuations of the average transverse momentum of produced particles near mid-rapidity have been measured by the PHENIX Collaboration in sqrt(s_NN)=200 GeV Au+Au and p+p collisions at the Relativistic Heavy Ion Collider. The fluctuations are observed to be in excess of the expectation for statistically independent particle emission for all centralities. The excess fluctuations exhibit a dependence on both the centrality of the collision and on the transverse momentum window over which the average is calculated. Both the centrality and p_T dependence can be well reproduced by a simulation of random particle production with the addition of contributions from hard scattering processes.

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the PHENIX Collaboration, S. S. Adler. 2004-05-26. Measurement of Non-Random Event-by-Event Fluctuations of Average Transverse Momentum in sqrt(s_NN)=200 GeV Au+Au and p+p Collisions. https://doi.org/10.1103/physrevlett.93.092301

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