This code calculates the generic multi-particle correlator

C{n} = <exp(i(sum_j^n h_j phi_j))>

where the vector h=h_1,...,h_n is the harmonics of each particle, and phi_j is the observations of the azimuth angle.

See also

http://arxiv.org/abs/1312.3572

• cas - Computer Algebra System files.
• correlations - C++ header library
• data - Some test data
• doc - Some code documentation files

To check out, do (CERN users)

svn co https://svn.cern.ch/reps/alicefmd/mcorrelations/trunk mcorrelations

For non-CERN users do

svn co http://svnweb.cern.ch/guest/alicefmd/mcorrelations/trunk mcorrelations

Alternatively download from

http://www.nbi.dk/~cholm/mcorrelations/

and extract.

To build, do

cd mcorrelations
make

To run tests, do

make test
make Test

(Test requires ROOT)

To make the documentation (requires Doxygen), do

make doc

The code implements:

• correlations::NestedLoops - direct loop calculations.
• correlations::recursive::NestedLoops - loop calculations, using recursion.
• correlations::closed::FromQVector - Calculation from Q-vector using fixed expression (up to 8-particle correlator defined).
• correlations::recurrence::FromQVector - Calculation from Q-vector using combinatorics and recurrence
• correlations::recursive::FromQVector - Calculation from Q-vector using recursion only.

See also the example correlations/progs/analyze.cc (and correlations/progs/Analyze.C - the ROOT version).

Copyright (c) 2013, Kristjan Gulbrandsen, Ante Bilandzic, Christian Holm Christensen

GNU General Public License version 3 - see COPYING