Speaker
Description
Two-particle azimuthal correlation has been proposed to be one of the most direct and sensitive channels to access the nonlinear gluon dynamics in nuclei. In hadron collisions at RHIC, forward particle production probes gluons at small momentum fraction where the gluon density rises sharply. During the 2015 RHIC run, STAR collected data for measuring azimuthal correlations of neutral pions detected with the Forward Meson Spectrometer (FMS, 2.6 ≤ η ≤ 4.0) in p+p, p+Au and p+Al collisions at √sNN = 200 GeV. In this talk, we will present the measurement of di-hadron correlations as a function of mass number A and transverse momenta (pT ) of both the trigger π0 (1.4 GeV/c < pT < 5 GeV/c) and the associated back-to-back π0 (1 GeV/c < pT < 2.8 GeV/c).
