Examination of direct-photon and pion production in proton-nucleon collisions
arXiv:hep-ph/0007191 · doi:10.1103/PhysRevD.63.014009
Abstract
We present a study of inclusive direct-photon and pion production in hadronic interactions, focusing on a comparison of the ratio of gamma/pi0 yields with expectations from next-to-leading order perturbative QCD (NLO pQCD). We also examine the impact of a phenomenological model involving k_T smearing (which approximates effects of additional soft-gluon emission) on absolute predictions for photon and pion production and their ratio.
20 pages, 12 figures. Minor changes in wording and in figure 2