Positive and negative 2- and 3-particle correlations: what about hadron-proton correlation?

Multi-particle (2- and 3-) azimuthal correlation is thought as a good probe to explore the properties of strongly interacting partonic matter in central Au+Au collisions at RHIC. Especially, 3-particle correlation has a great potential to identify the production mechanism(s) of observed Mach-like correlation. Different from the previous analysis on multi-particle correlation between charge trigger and associated hadrons (abbr. $h-h$), this talk presents the multi-particle correlation between charge trigger hadron ($3