Large-p_T Inclusive pi^0 Cross Sections and Next-to-Leading-Order QCD Predictions
P. Aurenche, M. Fontannaz, J.-Ph. Guillet, B. A. Kniehl, M. Werlen
TL;DR
This paper reviews pi^0 production at high transverse momentum in proton collisions, discussing uncertainties in NLO QCD predictions and highlighting a normalization discrepancy between theory and experiment.
Contribution
It provides a detailed comparison of NLO QCD predictions with experimental data for pi^0 production, emphasizing normalization issues and contrasting with prompt-photon production.
Findings
Discrepancy in overall normalization between theory and data
Uncertainties in NLO QCD predictions for pi^0 production
Contrast with prompt-photon production results
Abstract
We review the phenomenology of pi^0 production at large transverse momentum in proton-induced collisions. Uncertainties in the next-to-leading-order predictions of Quantum Chromodynamics are discussed. The comparison with data reveals that the disagreement between theory and experiment lies essentially in an overall normalization factor. The situation for pi^0 production is contrasted with that of prompt-photon production in hadronic collisions.
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