Identifying the underlying physics of the ridge via 3-particle $\Delta \eta -\Delta \eta$ correlations

Pawan Kumar Netrakanti, for STAR Collaboration

We present the first results on 3-particle $\Delta \eta$-$\Delta \eta$ correlations in minimum bias $d$+Au, peripheral and central Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV measured by the…