Analysis of inclusive photoproduction shows theoretical uncertainties in quantum chromodynamics, indicating implications for particle physics.
We study the inclusive photoproduction of neutral and charged pions and \μ 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 proton sets of structure functions. A new set of fragmentation functions for charged pions is also presented.
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M. et al. (1995) studied this question.
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