About Geometric Scaling and Small-x Evolution at RHIC and LHC

Abstract

We show that the whole range of RHIC data for hadron production in d-Au collisions is compatible with geometric scaling. To establish the scaling violations expected from small-x evolution a larger kinematic range in transverse momentum and rapidity would be needed. We point out that the fall-off of the p_t distribution of produced hadrons at large p_t is a sensitive probe of small-x evolution especially at the LHC.

Comments: 4 pages, 2 figures, contributed to the Proceedings of DIS2008