Photon and Pion Production at High $p_T$

Abstract

We present a study of high-$p_T$ photon and pion production in hadronic interactions, focusing on a comparison of the yields with expectations from next-to-leading order perturbative QCD (NLO pQCD). We examine the impact of phenomenological models of $k_T$ smearing (which approximate effects of additional soft-gluon emission) on absolute predictions for photon and pion production and their ratio.

arXiv commentTalk given at CIPANP 2000 (7th Conference on the Intersections of Particle and Nuclear Physics), Quebec City, May 22-28, 2000; to be published in the conference Proceedings. The submission includes a LaTeX source file, and 6 postscript figures (5pp)