Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations

Mark I. Gorenstein; Katarzyna Grebieszkow

doi:10.1103/PhysRevC.89.034903

Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations

Nuclear Theory 2014-03-12 v2 High Energy Physics - Phenomenology Nuclear Experiment

Authors: Mark I. Gorenstein , Katarzyna Grebieszkow

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Abstract

The strongly intensive measures $\Delta[P_T,N]$ and $\Sigma[P_T,N]$ are used to study the event-by-event fluctuations of the transverse momentum $P_T$ and particle multiplicity $N$ in nucleus-nucleus collisions. A special normalization for these fluctuation measures ensures that they are dimensionless and yields a common scale required for a quantitative comparison of fluctuations. In this paper basic properties of the $\Delta[P_T, N]$ and $\Sigma[P_T, N]$ measures are tested within different phenomenological models using the Monte Carlo simulations (the so-called fast generators) and analytical solutions. The obtained results are helpful to elucidate the properties of $\Delta[P_T,N]$ and $\Sigma[P_T,N]$ measures.

Keywords

strongly intensive measures transverse momentum fluctuations particle number fluctuations nucleus-nucleus collisions monte carlo simulations phenomenological models

Cite

@article{arxiv.1309.7878,
  title  = {Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations},
  author = {Mark I. Gorenstein and Katarzyna Grebieszkow},
  journal= {arXiv preprint arXiv:1309.7878},
  year   = {2014}
}

Comments

v2: text changes, Fig. 2 replaced (higher statistics), section with new simulations, Fig. 5 a) and b), added (centrality dependence of fluctuation measures), paper accepted by Phys. Rev. C

Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations

Abstract

Keywords

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