Event-by-event ???uctuations of mean transverse momentum in Au + Au collisions in STAR experiment at relativistic heavy-ion collider

摘要

We report results on event-by-event ???uctuations in mean transverse momentum in Au + Au collisions at $sqrt{S_{NN}}=130$ GeV measured by the STAR experiment at RHIC. The dynamical ???uctuations, $e???_{langle p_{t} angle, ext{dynam}}$, is found to be about 1.2 ?± 0.2% of the mean transverse momentum for particles in pseudo-rapidity range of -0.5 e??? 0.5 and for the top 6% central collisions.