Discussing the possibility of observation of parity violation in heavy ion collisions

It was recently argued that in heavy ion collisions the parity could be broken. This paper addresses the question of the possibility of the experimental detection of the effect. We discuss how parity violating effects would modify the final particle distributions and how one could construct variables sensitive to the effect, and which measurement would be the (most) conclusive. Discussing different observables we also discuss the question of whether the ``signals'' can be faked by ``conventional'' effects (such as anisotropic flow, etc.) and make estimates of the signals.