Systematic procedure for analyzing cumulants at any order

Philippe Di Francesco, Maxime Guilbaud, Matthew Luzum, and Jean-Yves Ollitrault
Phys. Rev. C 95, 044911 – Published 24 April 2017

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 to leading order for detector nonuniformity, and it is useful for numerous other applications as well. We discuss several of these applications: anisotropic flow, event-plane correlations, symmetric cumulants, and net baryon and net charge fluctuations.

  • Received 21 December 2016
  • Revised 15 February 2017

DOI:https://doi.org/10.1103/PhysRevC.95.044911

©2017 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Philippe Di Francesco1,2, Maxime Guilbaud3, Matthew Luzum4, and Jean-Yves Ollitrault1

  • 1Institut de physique théorique, Université Paris Saclay, CNRS, CEA, F-91191 Gif-sur-Yvette, France
  • 2Department of Mathematics, University of Illinois MC-382, Urbana, Illinois 61821, USA
  • 3Rice University, Houston, Texas 77005, USA
  • 4Instituto de Física, Universidade de São Paulo, C.P. 66318, 05315-970 São Paulo, São Paulo, Brazil

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Issue

Vol. 95, Iss. 4 — April 2017

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