Principal Component Analysis of Event-by-Event Fluctuations.

  title={Principal Component Analysis of Event-by-Event Fluctuations.},
  author={Rajeev S. Bhalerao and J-Y. Ollitrault and Subrata Pal and Derek A. Teaney},
  journal={Physical review letters},
  volume={114 15},
We apply principal component analysis to the study of event-by-event fluctuations in relativistic heavy-ion collisions. This method brings out all the information contained in two-particle correlations in a physically transparent way. We present a guide to the method, and apply it to multiplicity fluctuations and anisotropic flow, using ALICE data and simulated events. In particular, we study elliptic and triangular flow fluctuations as a function of transverse momentum and rapidity. This… Expand
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