Inclusive particle photoproduction to next-to-leading order

Abstract

We study the inclusive photoproduction of neutral and charged pions and $\eta$ at HERA, via the resolved photon mechanism, in QCD to next-to-leading order. We present various distributions of phenomenological interest and study the theoretical uncertainties due to the mass scales, and to photon and proton sets of structure functions. A new set of fragmentation functions for charged pions is also presented.

Comments: 10 pages, LaTex, uuencoded figures appended, Fermilab-Pub-94/075-A, DFPD 94/TH/21