High pT charged pion and proton production in GeV Au + Au and d + Au collisions

Abstract

We present measurements of identified high pT proton and charged pion production in Au+Au and d+Au collisions at GeV at mid-rapidity and pseudorapidity η = 2.2. First results indicate a clear suppression of π± yields at mid-rapidity in central Au+Au collisions and π− yields at forward rapidity (y = 2.2) in both central Au+Au and central d+Au collisions. Particle composition is further discussed in terms of ratio at mid-rapidity and of the π−/h− ratio at forward rapidity.