Rapidity and Species Dependence of Particle Production at Large Transverse Momentum for d+Au Collisions at psNN=200 GeV

摘要

The mechanisms for particle production in d+Au collisions at RHIC may be different at forward and backward rapidities. The partons from the deuteron-side (forward rapidity) are expected to undergo multiple scattering while traversing the gold nucleus. Those on the gold-side (backward rapidity) are likely to be affected by the properties of the nucleus. A comparative study of particle production at forward and backward rapidity can be carried out using a ratio called the rapidity asymmetry.