We discuss how the angular distribution of lepton pairs from decays of vector mesons depends on the choice of reference frame, and provide a geometrical description of the transformations of the coefficients of the angular distribution. Invariant expressions involving all coefficients are discussed, together with bounds and consistency relations.
@article{arxiv.1012.2485,
title = {Angular distribution and rotations of frame in vector meson decays into lepton pairs},
author = {Sandro Palestini},
journal= {arXiv preprint arXiv:1012.2485},
year = {2011}
}