An object-oriented software framework for anisotropic flow analysis

4 Nov 2019, 17:40
Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Poster Presentation Jet modifications and medium response Poster Session


Lukas Kreis (GSI - Helmholtzzentrum für Schwerionenforschung GmbH (DE))


We present an object-oriented software framework for performing the anisotropic flow analysis in collisions of ions and hadrons. The framework operates on flow Q-vectors and provides an abstraction layer for the analysis of two and multi-particle correlation functions. Its modular design and flexible interface allows to use it as an external software package, which fits the scope of any experimental setup.

The current version implements commonly used flow observables, multi-differential corrections of Q-vectors with the possibility for data preprocessing to account for detector azimuthal non-uniformity. The extension of the core functionality and the definition of new observables and correction steps is straightforward. The framework supports multi-differential flow analyses with statistical uncertainty propagation based on subsampling and/or bootstrapping algorithms. To illustrate the flexibility and powerful functionality of the framework, examples of application to data analyses of ALICE at the LHC, NA49 and NA61/SHINE at SPS, and the future CBM experiment at FAIR will be shown.

Primary authors

Lukas Kreis (GSI - Helmholtzzentrum für Schwerionenforschung GmbH (DE)) Ilya Selyuzhenkov (GSI, Darmstadt) Mr Victor Gonzalez (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))

Presentation Materials