Easy all-order cumulants

Abstract : We present a systematic procedure for analyzing cumulants to arbitrary order in the context of heavy-ion collisions. It generalizes and improves existing procedures in many respects. In particular, particles which are correlated are allowed to belong to different phase-space windows, which may overlap. It also allows for the analysis of cumulants at any order, using a simple algorithm rather than complicated expressions to be derived and coded by hand. In the case of azimuthal correlations, it automatically corrects for detector non-uniformity, and it is useful for numerous other applications as well. We discuss several of these applications: anisotropic flow, event-plane correlations, symmetric cumulants, net baryon and net charge fluctuations.
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https://hal-cea.archives-ouvertes.fr/cea-01472222
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Submitted on : Monday, February 20, 2017 - 4:12:12 PM
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  • HAL Id : cea-01472222, version 1
  • ARXIV : 1612.05634

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Philippe Di Francesco, Maxime Guilbaud, Matthew Luzum, Jean-Yves Ollitrault. Easy all-order cumulants. 2016. ⟨cea-01472222⟩

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