Publication : t17/005

Systematic procedure for analyzing cumulants at any order

Di Francesco P. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
Guilbaud M. (Department of Physics and Astronomy, Rice University, Houston, TX 77251-1892, USA)
Luzum M. (Departamento de Física Matemática Instituto de Física Universidade de São Paulo C.P. 66318 05315-970, São Paulo, Brazil)
Ollitrault J.-Y. (CEA, IPhT (Institut de Physique Théorique), F-91191 Gif-sur-Yvette, France)
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.
Année de publication : 2017
Revue : Phys. Rev. C 95 044911 (2017)
DOI : 10.1103/PhysRevC.95.044911
Preprint : arXiv:1612.05634
Langue : Anglais

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