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Transverse momentum and energy correlations in the equilibrium system from high-energy nuclear collisions

Stanislaw Mrowczynski
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Abstract

The so-called $Φ$ parameter, which measures the transverse momentum or energy correlations (fluctuations) in high-energy collisions independently of the particle multiplicity, is computed for the equilibrium ideal gas. As expected $Φ$ vanishes for the particles obeying Boltzmann statistics but is finite for the quantum particles, positive for bosons and negative for fermions. $Φ_{p_{\perp}}$, which is found for the pions gas, significantly exceeds the value of $Φ_{p_{\perp}}$ measured by the NA49 experiment. The discrepancy is discussed.

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Stanislaw Mrowczynski. 1999-03-24. Transverse momentum and energy correlations in the equilibrium system from high-energy nuclear collisions. https://doi.org/10.1016/s0370-2693(98)01046-6

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