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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

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arxiv nucl-ex/0310005 v2 pith:HOFS6BMQ submitted 2003-10-06 nucl-ex

classification nucl-ex
keywords fluctuationsaveragemomentumtransversecentralitycollisionsdependenceevent-by-event
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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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Forward citations

Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 97 citations worldwide. Full citation record

  1. Interaction fingerprints in temperature-fluctuation cumulants from the QCD crossover to nuclear liquid-gas criticality

    nucl-th 2026-07 conditional novelty 6.0 of 10

    Temperature-fluctuation cumulants in ideal, excluded-volume, and van der Waals hadron resonance gas track lattice QCD through the crossover, separate along freeze-out at low energy, and trace the nuclear liquid-gas Wi...

  2. System size and energy dependence of the mean transverse momentum fluctuations at the LHC

    nucl-ex 2024-11 conditional novelty 6.0 of 10

    ALICE reports the system-size and energy dependence of mean transverse momentum fluctuations at the LHC, including a new spherocity-dependent measurement in proton-proton collisions.

  3. Rapidity dependence of mean transverse momentum fluctuation and decorrelation in baryon-dense medium

    nucl-th 2026-02 unverdicted novelty 5.0 of 10

    Mean transverse momentum fluctuations in baryon-rich matter are driven by energy and baryon density variations, remain robust to baryon diffusion, and show splitting between protons and antiprotons.

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