Abstract
We investigate the effect of resonance decays on the three-particle correlator charge separation observable in a search for the chiral magnetic effect, using a simple simulation with realistic inputs. We find that resonance decays can largely account for the measured signal. We suppress the elliptic flow () background by using zero event-by-event (or via the mixed-event technique). We find that the background is suppressed, but not eliminated as naively anticipated. We identify the reason to be the nonidenticalness of the resonance and final-state particle's and the induced correlation between the transverse momentum dependent resonance and decay angle. We make predictions for the charge separation signal due to resonance decays in 200 GeV Au+Au collisions.
- Received 10 February 2017
DOI:https://doi.org/10.1103/PhysRevC.95.051901
©2017 American Physical Society