cumulants with particle weights.

[kreisl]

How to handle power of weights that enter in the cumulants calculated from the Q-vectors.
Right now we need a Q-vector / Detector for each power. So to calculate v_2{4} 4 different weights are needed.
Is there some smarter way, how to store this information in the Q-vector internally?
See https://doi.org/10.1103/PhysRevC.83.044913 appendix B for more information.